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Cheap flights from St. Louis (STL) to Sky Harbor Intl (PHX) from $66

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — PHX
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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The best prices from Lambert-St Louis to Phoenix Sky Harbor Intl are usually found in May or August, booked 83 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from St. Louis to Sky Harbor Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Sky Harbor Intl (PHX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Popular in

March

Cheapest in

May

Round-trip from

$251

One-way from

$108
High demand for flights, 15% potential price rise
Search Deals
Best time to find cheap flights, 36% potential price drop
Search Deals
From Lambert-St Louis to Phoenix Sky Harbor Intl
Search Deals
One-way flight from Lambert-St Louis to Phoenix Sky Harbor Intl
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What is the cheapest day to fly round-trip from St. Louis to Phoenix Sky Harbor Intl Airport?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 32% on the overall cost on flights from St. Louis to Phoenix Sky Harbor Intl Airport.

How far in advance should I book a flight from St. Louis to Phoenix Sky Harbor Intl Airport?

Users have found that booking a flight from St. Louis to Phoenix Sky Harbor Intl Airport at least 53 days early can save you up to 37% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from St. Louis to Phoenix Sky Harbor Intl Airport for as little as $204 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $473 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Phoenix Sky Harbor Intl Airport?

The best pricing can be found in the month of May. Prices to Phoenix Sky Harbor Intl Airport from St. Louis average $357. You can even find prices in May for less than $357, as users have found deals to Phoenix Sky Harbor Intl Airport from as low as $78. The month of March appears to be one of the more expensive times to travel to Phoenix Sky Harbor Intl Airport from St. Louis. Flying in the targeted month can save you up to 17%.

When is the cheapest time to fly from St. Louis to Phoenix Sky Harbor Intl Airport (STL - PHX)?

When flying from St. Louis to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 54% versus a flight in the morning.

Cheap Frontier flights from St. Louis to Sky Harbor Intl

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Sky Harbor Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a look at some of the lowest-priced Frontier flights heading from St. Louis to Phoenix. Make sure to double check the flight details before booking.
Wed 6/1210:57 pmSTL - PHX
Nonstop3h 18mFrontier
Wed 6/195:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$78
Wed 5/2910:21 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 5/314:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$88
Sat 9/2111:41 pmSTL - PHX
Nonstop3h 18mFrontier
Mon 9/233:35 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$92
Fri 6/1412:54 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 6/217:00 amPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$98
Sat 6/810:43 pmSTL - PHX
Nonstop3h 16mFrontier
Wed 6/125:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$107
Wed 10/239:26 pmSTL - PHX
Nonstop3h 18mFrontier
Sat 10/265:50 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$122
Wed 10/239:26 pmSTL - PHX
Nonstop3h 18mFrontier
Sat 10/265:50 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$126
Wed 7/310:57 pmSTL - PHX
Nonstop3h 18mFrontier
Mon 7/86:40 amPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$129
Mon 6/1010:59 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 6/174:16 pmPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$130

  • One of the most popular airlines traveling from St. Louis to Phoenix Sky Harbor Intl Airport is Frontier. Flights from Frontier traveling this route typically cost $511.19 RT. This price is typically 15% cheaper than other airlines that offer St. Louis to Phoenix Sky Harbor Intl Airport flights. When booking this route, the cheapest RT price found was $348. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Phoenix Sky Harbor Intl Airport. Phoenix Sky Harbor Intl Airport is the most popular arrival airport in Phoenix Sky Harbor Intl Airport. When flying from St. Louis to Phoenix Sky Harbor Intl Airport, Frontier flights are 6% more popular than any other airline flying that same route.

Cheap American Airlines flights from St. Louis to Sky Harbor Intl

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Sky Harbor Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Some of the lowest-priced American Airlines flights we've found at this time heading from St. Louis to Phoenix. Check back soon if you're not seeing flights that suit your needs.
Tue 6/42:28 pmSTL - PHX
Nonstop3h 21mAmerican Airlines
Tue 6/1112:24 pmPHX - STL
Nonstop2h 57mAmerican Airlines
Deal found 5/15$131
Fri 8/27:40 amSTL - PHX
Nonstop3h 14mAmerican Airlines
Sun 8/46:55 pmPHX - STL
Nonstop3h 00mAmerican Airlines
Deal found 5/15$181
Wed 5/226:18 pmSTL - PHX
Nonstop3h 24mAmerican Airlines
Tue 5/286:56 pmPHX - STL
Nonstop3h 00mAmerican Airlines
Deal found 5/16$201
Tue 5/282:00 pmSTL - PHX
1 stop7h 32mAmerican Airlines
Thu 7/46:56 pmPHX - STL
Nonstop2h 54mAmerican Airlines
Deal found 5/15$218
Tue 6/47:45 amSTL - PHX
1 stop7h 25mAmerican Airlines
Tue 6/116:56 pmPHX - STL
Nonstop2h 54mAmerican Airlines
Deal found 5/15$220
Thu 6/67:35 amSTL - PHX
Nonstop3h 20mAmerican Airlines
Tue 6/1112:24 pmPHX - STL
Nonstop2h 57mAmerican Airlines
Deal found 5/15$226
Tue 9/247:37 amSTL - PHX
1 stop7h 17mAmerican Airlines
Thu 10/36:50 pmPHX - STL
Nonstop2h 59mAmerican Airlines
Deal found 5/15$233
Sat 6/87:35 amSTL - PHX
Nonstop3h 20mAmerican Airlines
Sun 6/1610:59 pmPHX - STL
1 stop7h 34mAmerican Airlines
Deal found 5/15$234
Wed 7/36:11 pmSTL - PHX
Nonstop3h 17mAmerican Airlines
Sun 7/712:32 amPHX - STL
1 stop6h 57mAmerican Airlines
Deal found 5/15$236

  • If you’re traveling from St. Louis to Phoenix Sky Harbor Intl Airport, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $414.68 RT. This price is typically 32% more expensive than other airlines that offer St. Louis to Phoenix Sky Harbor Intl Airport flights. When booking this route, the cheapest RT price found was $231. The most popular departure airport in St. Louis when flying to Phoenix Sky Harbor Intl Airport is Lambert-St Louis Airport. The most popular airport to fly into when visiting Phoenix Sky Harbor Intl Airport is Phoenix Sky Harbor Intl Airport. When flying from St. Louis to Phoenix Sky Harbor Intl Airport, American Airlines flights are 4% more popular than any other airline flying that same route.

Cheap St. Louis to Sky Harbor Intl flights in May & June 2024

Find cheap flight options from St. Louis to Sky Harbor Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Phoenix in 2024. More deals are always being added, so be sure to check back regularly.
Wed 5/2210:21 pmSTL - PHX
Nonstop3h 17mFrontier
Wed 5/294:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/14$68
Wed 6/1210:57 pmSTL - PHX
Nonstop3h 18mFrontier
Wed 6/195:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$78
Wed 5/2910:21 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 5/314:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$88
Fri 6/1412:54 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 6/217:00 amPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$98
Sat 6/810:43 pmSTL - PHX
Nonstop3h 16mFrontier
Wed 6/125:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$107
Wed 5/2911:36 amSTL - PHX
1 stop24h 44mMultiple Airlines
Fri 5/314:32 pmPHX - STL
Nonstop2h 59mMultiple Airlines
Deal found 5/15$127
Mon 6/1010:59 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 6/174:16 pmPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$130
Tue 6/42:28 pmSTL - PHX
Nonstop3h 21mAmerican Airlines
Tue 6/1112:24 pmPHX - STL
Nonstop2h 57mAmerican Airlines
Deal found 5/15$131
Wed 6/191:55 pmSTL - PHX
1 stop23h 05mMultiple Airlines
Sat 6/223:06 pmPHX - STL
Nonstop2h 54mMultiple Airlines
Deal found 5/15$136

St. Louis to Sky Harbor Intl 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Sky Harbor Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Phoenix in 2024. More deals are always being added, so be sure to check back regularly.
Wed 5/2210:21 pmSTL - PHX
Nonstop3h 17mFrontier
Wed 5/294:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/14$68
Wed 6/1210:57 pmSTL - PHX
Nonstop3h 18mFrontier
Wed 6/195:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$78
Wed 8/710:59 pmSTL - PHX
Nonstop3h 09mFrontier
Wed 8/143:35 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$81
Wed 5/2910:21 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 5/314:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$88
Wed 8/710:59 pmSTL - PHX
Nonstop3h 09mFrontier
Mon 8/126:40 amPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$91
Sat 8/109:55 pmSTL - PHX
Nonstop3h 09mFrontier
Mon 8/126:40 amPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$92
Fri 6/1412:54 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 6/217:00 amPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$98
Sat 6/810:43 pmSTL - PHX
Nonstop3h 16mFrontier
Wed 6/125:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$107
Sat 7/139:55 pmSTL - PHX
Nonstop3h 09mMultiple Airlines
Tue 7/169:14 pmPHX - STL
1 stop15h 52mMultiple Airlines
Deal found 5/15$114

Non-stop flights to Sky Harbor Intl from St. Louis

Discover non-stop flight options from St. Louis to Sky Harbor Intl. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
For a quicker trip, book one of these direct flights from St. Louis to Phoenix. Users can also choose from other St. Louis to Phoenix flights by using the search form above.
Wed 6/1210:57 pmSTL - PHX
Nonstop3h 18mFrontier
Wed 6/195:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$78
Wed 8/710:59 pmSTL - PHX
Nonstop3h 09mFrontier
Wed 8/143:35 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$81
Wed 5/2910:21 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 5/314:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$88
Wed 8/710:59 pmSTL - PHX
Nonstop3h 09mFrontier
Mon 8/126:40 amPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$91
Sat 8/109:55 pmSTL - PHX
Nonstop3h 09mFrontier
Mon 8/126:40 amPHX - STL
Nonstop3h 01mFrontier
Deal found 5/16$92
Fri 6/1412:54 pmSTL - PHX
Nonstop3h 17mFrontier
Fri 6/217:00 amPHX - STL
Nonstop2h 54mFrontier
Deal found 5/15$98
Sat 6/810:43 pmSTL - PHX
Nonstop3h 16mFrontier
Wed 6/125:08 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$107
Wed 10/239:26 pmSTL - PHX
Nonstop3h 18mFrontier
Sat 10/265:50 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$122
Wed 10/239:26 pmSTL - PHX
Nonstop3h 18mFrontier
Sat 10/265:50 pmPHX - STL
Nonstop3h 01mFrontier
Deal found 5/15$126

St. Louis to Sky Harbor Intl flights leaving soon

Find last-minute flight options from St. Louis to Sky Harbor Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Book one of these great deals on flights from St. Louis to Phoenix. Users should examine the flight details to ensure there are no surprises.
Wed 5/2210:21 pmSTL - PHX
Nonstop3h 17mFrontier
Wed 5/298:11 pmPHX - STL
1 stop12h 02mFrontier
Deal found 5/14$138
Sat 5/2511:41 pmSTL - PHX
Nonstop3h 17mFrontier
Tue 5/285:45 amPHX - STL
1 stop5h 24mFrontier
Deal found 5/15$148
Sat 5/2511:41 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 5/274:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$170
Wed 5/2210:21 pmSTL - PHX
Nonstop3h 17mFrontier
Tue 5/288:07 pmPHX - STL
1 stop12h 06mFrontier
Deal found 5/16$174
Fri 5/2410:21 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 5/274:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/16$181
Fri 5/2410:21 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 5/274:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$184
Fri 5/2410:21 pmSTL - PHX
Nonstop3h 17mFrontier
Mon 5/274:32 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 5/15$185
Wed 5/2210:21 pmSTL - PHX
Nonstop3h 17mFrontier
Sun 5/2611:35 amPHX - STL
1 stop8h 57mFrontier
Deal found 5/15$198
Wed 5/226:18 pmSTL - PHX
Nonstop3h 24mAmerican Airlines
Tue 5/286:56 pmPHX - STL
Nonstop3h 00mAmerican Airlines
Deal found 5/16$201

One-way flights to Sky Harbor Intl from St. Louis

Search for one-way flight options from St. Louis to Sky Harbor Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users traveling one-way from St. Louis to Phoenix can select one of these great deals. Users in need of a round-trip flight from St. Louis to Phoenix instead should update the search form at the top of page.
Thu 10/32:35 pmSTL - PHX
Nonstop3h 17mAmerican Airlines
Deal found 5/15$66
Wed 6/51:55 pmSTL - PHX
1 stop23h 05mSpirit Airlines
Deal found 5/15$73
Fri 6/77:35 amSTL - PHX
Nonstop3h 20mAmerican Airlines
Deal found 5/14$91
Wed 6/261:55 pmSTL - PHX
1 stop23h 05mSpirit Airlines
Deal found 5/15$92
Fri 6/76:06 amSTL - PHX
1 stop8h 55mDelta
Deal found 5/15$108
Sun 6/21:25 pmSTL - PHX
2 stops23h 07mMultiple Airlines
Deal found 5/15$123
Sun 9/86:18 pmSTL - PHX
1 stop18h 14mSpirit Airlines
Deal found 5/15$127
Thu 10/33:53 pmSTL - PHX
1 stop10h 30mFrontier
Deal found 5/15$131
Fri 6/76:10 pmSTL - PHX
2 stops18h 39mMultiple Airlines
Deal found 5/15$143

Find flights from St. Louis to Sky Harbor Intl within your budget

Customize your flight search to find flights from St. Louis to Sky Harbor Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$78 - $245

Route

Depart

Return

Price

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Wed 6/12

Nonstop3h 18m

Phoenix Sky Harbor Intl

Wed 6/19

Nonstop2h 59m

$78

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Wed 5/29

Nonstop3h 17m

Phoenix Sky Harbor Intl

Fri 5/31

Nonstop2h 59m

$88

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Sat 9/21

Nonstop3h 18m

Phoenix Sky Harbor Intl

Mon 9/23

Nonstop3h 01m

$92

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Fri 6/14

Nonstop3h 17m

Phoenix Sky Harbor Intl

Fri 6/21

Nonstop2h 54m

$98

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Sat 7/13

Nonstop3h 09m

Phoenix Sky Harbor Intl

Tue 7/16

1 stop15h 52m

$114

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Tue 6/4

Nonstop3h 21m

Phoenix Sky Harbor Intl

Tue 6/11

Nonstop2h 57m

$131

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Wed 6/12

1 stop23h 05m

Phoenix Sky Harbor Intl

Tue 6/18

1 stop24h 49m

$160

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Thu 6/6

1 stop6h 23m

Phoenix Sky Harbor Intl

Tue 6/11

1 stop5h 21m

$216

Lambert-St LouisPhoenix Sky Harbor Intl

STL - PHX

STLPHX

Lambert-St Louis

Sun 8/11

1 stop23h 36m

Phoenix Sky Harbor Intl

Sun 8/18

1 stop21h 09m

$245

Flights are sorted by cheapest first

Deals found on 5/15

When is the best time to book a flight from St. Louis to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Sky Harbor Intl. Price data was last updated on May 10, 2024.
Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Phoenix Sky Harbor Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from St. Louis to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Sky Harbor Intl. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Phoenix Sky Harbor Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Sky Harbor Intl by month

Plan your trip from St. Louis to Sky Harbor Intl by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Sky Harbor Intl is currently $106 while a round-trip flight costs $136. Price data was last updated on May 12, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Phoenix Sky Harbor Intl Airport (average of $251). Flying from St. Louis to Phoenix Sky Harbor Intl Airport in June is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$251

February

$295

March

$318

April

$297

May

$298

June

$337

July

$314

August

$269

September

$263

October

$264

November

$292

December

$256

Temperature and rainfall in Sky Harbor Intl by month

Plan your trip to Sky Harbor Intl by taking into account the average temperature and rainfall totals by month.

PHX

Temperature

55.4 - 95 °F

Reviews of airlines servicing Sky Harbor Intl

Get insights into the airlines that provide service to Sky Harbor Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sky Harbor Intl. Reviews last updated May 16, 2024.
Get a feel of what it's like to fly with Frontier, American Airlines and Spirit Airlines from St. Louis to Phoenix by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,157 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,673 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,924 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,514 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Sun Country Air
7.2
Good
630 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Sky Harbor Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Phoenix Sky Harbor Intl?

    For a flight from St. Louis to Phoenix Sky Harbor Intl, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 10 outbound flights to Phoenix Sky Harbor Intl per day. 5 airlines have flights to Phoenix Sky Harbor Intl from Lambert-St Louis on a regular basis.

  • Can I find flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $100. The cheapest flight booked recently is on Frontier for just $78, but on average you can expect to pay $126.

  • Are there nonstop flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Phoenix Sky Harbor Intl Airport under $100. A good price for a nonstop flight from St. Louis to Phoenix Sky Harbor Intl Airport is less than $126.

  • Are there last-minute flights available from St. Louis to Phoenix Sky Harbor Intl Airport for under $200?

    There are currently 20+ open flights from St. Louis to Phoenix Sky Harbor Intl Airport within the next 7 days for less than $200.

  • What are the cheapest airlines flying from St. Louis to Phoenix Sky Harbor Intl Airport round-trip?

    Flying on Frontier is currently your cheapest option to Phoenix Sky Harbor Intl Airport, with prices starting at $78. Additional round-trip tickets that might be worth considering are offered by American Airlines and Spirit Airlines, with the lowest prices starting at $131 and $160, respectively. Frontier is priced at 78% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Phoenix Sky Harbor Intl Airport one-way?

    One-way options have recently been found by users for as low as $66 on American Airlines. Other airlines that offer cheap prices include Spirit Airlines from $73 and Delta from $108 one-way.

  • What are the most popular airlines that fly from St. Louis to Phoenix Sky Harbor Intl Airport?

    Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to Phoenix Sky Harbor Intl Airport.

  • What are the most reliable airlines from St. Louis to Phoenix Sky Harbor Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Phoenix Sky Harbor Intl Airport on time: Frontier (89%), American Airlines (81%), Alaska Airlines (79%).

  • What are the cheapest flights from St. Louis to Phoenix Sky Harbor Intl Airport?

    On average you can expect to pay $605 for a flight from St. Louis to Phoenix Sky Harbor Intl Airport. The cheapest flight overall is $49 while the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl) is currently priced at $107.

  • What does STL to PHX mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Phoenix Sky Harbor Intl Airport flight would often be abbreviated as a STL to PHX flight.

  • Can I find deals for flights from St. Louis to Sky Harbor Intl that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Sky Harbor Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Sky Harbor Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Sky Harbor Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Sky Harbor Intl that include hotel bookings?

    Yes. In addition to deals on St. Louis to Sky Harbor Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Sky Harbor Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Sky Harbor Intl.

  • Can I find deals for business class flights from St. Louis to Sky Harbor Intl?

    Yes. Cheapflights offers flight deals from St. Louis to Sky Harbor Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Sky Harbor Intl that allow pets onboard?

    Many airlines flying from St. Louis to Sky Harbor Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Sky Harbor Intl?

    Yes, you can often find last-minute deals on St. Louis to Sky Harbor Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Phoenix Sky Harbor Intl Airport flight deals updated?

    The St. Louis to Phoenix Sky Harbor Intl Airport flight deals you see on this page were last updated on 5/16.

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Alternative routes for St. Louis to Sky Harbor Intl
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from St. Louis to Sky Harbor Intl

Discover the top 5 airlines that operate flights from St. Louis to Sky Harbor Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$186FlexibilityNo cancel feeOn-time62%
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Spirit AirlinesCheapest$110Average$148FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$209Average$406FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest$231Average$415FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$348Average$511FlexibilityNo cancel feeOn-time69%
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Search flights from St. Louis to Sky Harbor Intl by cabin class

Find flights from St. Louis to Sky Harbor Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to Sky Harbor Intl

Find hourly flight availability from St. Louis to Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 16, 2024.
10%of flight departuresEarly morningMidnight to 6 am
36%of flight departuresMorning6 am to noon
48%of flight departuresAfternoonNoon to 6 pm
6%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Sky Harbor Intl

Explore weekly flight availability from St. Louis to Sky Harbor Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 16, 2024.
Sunday13daily flights
Monday11daily flights
Tuesday11daily flights
Wednesday11daily flights
Thursday11daily flights
Friday10daily flights
Saturday9daily flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. Louis to Sky Harbor Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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Yes, we can. To see specific flights from St. Louis to Sky Harbor Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from St. Louis to Sky Harbor Intl become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis to Sky Harbor Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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