Cheap flights from Dulles Intl (IAD) to Portugal from $260

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 8/18. 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.
IAD — LIS
jun. 15 — jun. 221

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Portugal?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 30% on flights from Washington, D.C. Dulles Intl Airport to Portugal compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $714. For sooner than that we have options available in the next 3 days from $1,003.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Portugal?

The best pricing can be found in the month of January. Prices to Portugal from Washington, D.C. Dulles Intl Airport average $870. You can even find prices in January for less than $870, as users have found deals to Portugal from as low as $476. The month of June appears to be one of the more expensive times to travel to Portugal from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 39%.

What is the cheapest time of day to fly from IAD to PT?

When flying from Washington, D.C. Dulles Intl Airport to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Dulles Intl to Portugal flights in June & July 2024

Find cheap flight options from Dulles Intl to Portugal specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,080,152 searches. Prices were last updated on junio 10, 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Portugal in 2024. For more flight deals, be sure to check back very soon.
mar. 7/3010:20 pmIAD - OPO
1 stop20h 00mLufthansa
mié. 9/256:00 amOPO - IAD
2 stops18h 25mLufthansa
Deal found 6/8$619
mié. 7/3110:20 pmIAD - OPO
2 stops19h 25mLufthansa
mié. 8/286:15 amOPO - IAD
1 stop18h 10mLufthansa
Deal found 6/9$633
mar. 7/3010:30 pmIAD - OPO
1 stop11h 30mTAP AIR PORTUGAL
mié. 8/1410:55 pmOPO - IAD
1 stop21h 25mTAP AIR PORTUGAL
Deal found 6/10$650
mié. 7/2410:20 pmIAD - OPO
1 stop15h 40mMultiple Airlines
mié. 8/2110:25 pmOPO - IAD
2 stops26h 55mMultiple Airlines
Deal found 6/10$682
lun. 7/225:10 pmIAD - OPO
2 stops41h 20mDelta
mar. 8/69:15 amOPO - IAD
2 stops18h 48mDelta
Deal found 6/9$690
dom. 7/145:40 pmIAD - OPO
1 stop10h 20mTAP AIR PORTUGAL
jue. 7/188:55 amOPO - IAD
1 stop16h 25mTAP AIR PORTUGAL
Deal found 6/9$692
lun. 7/299:20 pmIAD - OPO
1 stop13h 10mDelta
mar. 8/134:20 pmOPO - IAD
2 stops30h 04mDelta
Deal found 6/9$695
mar. 7/3010:30 pmIAD - OPO
1 stop11h 30mMultiple Airlines
mié. 9/256:15 amOPO - IAD
3 stops40h 25mMultiple Airlines
Deal found 6/8$701
mié. 7/1710:20 pmIAD - OPO
1 stop15h 40mTAP AIR PORTUGAL
mié. 7/248:55 amOPO - IAD
1 stop11h 20mTAP AIR PORTUGAL
Deal found 6/9$713

Dulles Intl to Portugal 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Portugal in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,080,152 searches. Data last updated junio 10, 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Portugal in 2024. For more flight deals, be sure to check back very soon.
jue. 11/145:30 pmIAD - FAO
1 stop25h 20mTAP AIR PORTUGAL
sáb. 11/236:05 amFAO - IAD
1 stop13h 30mTAP AIR PORTUGAL
Deal found 6/9$484
sáb. 10/58:20 pmIAD - FAO
1 stop16h 00mTAP AIR PORTUGAL
lun. 10/146:10 pmFAO - IAD
1 stop26h 10mTAP AIR PORTUGAL
Deal found 6/9$532
jue. 11/148:45 pmIAD - FAO
1 stop30h 05mSWISS
sáb. 11/238:35 amFAO - IAD
1 stop13h 00mSWISS
Deal found 6/9$533
sáb. 9/288:20 pmIAD - FAO
1 stop22h 30mTAP AIR PORTUGAL
mar. 10/81:40 pmFAO - IAD
1 stop30h 35mTAP AIR PORTUGAL
Deal found 6/9$534
jue. 11/148:45 pmIAD - FAO
1 stop30h 05mMultiple Airlines
sáb. 11/238:35 amFAO - IAD
2 stops28h 28mMultiple Airlines
Deal found 6/9$539
mié. 11/1310:30 pmIAD - PDL
1 stop16h 00mTAP AIR PORTUGAL
lun. 11/187:25 pmPDL - IAD
1 stop22h 15mTAP AIR PORTUGAL
Deal found 6/9$540
dom. 9/2910:20 pmIAD - FAO
1 stop14h 00mTAP AIR PORTUGAL
lun. 10/76:10 pmFAO - IAD
1 stop26h 10mTAP AIR PORTUGAL
Deal found 6/9$552
sáb. 9/288:20 pmIAD - FAO
1 stop16h 00mTAP AIR PORTUGAL
lun. 10/76:10 pmFAO - IAD
1 stop26h 10mTAP AIR PORTUGAL
Deal found 6/9$553
mié. 12/115:20 pmIAD - FAO
1 stop13h 45mUnited Airlines
jue. 2/2712:55 pmFAO - IAD
1 stop31h 55mUnited Airlines
Deal found 6/10$554

Dulles Intl to Portugal flights leaving soon

Find last-minute flight options from Dulles Intl to Portugal 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 3,080,152 searches. Data last updated junio 10, 2024.
Consider one of these great deals we found on last-minute flights from Washington, D.C. to Portugal. Users should examine the flight details to ensure there are no surprises.
lun. 6/171:25 pmIAD - OPO
2 stops38h 00mAir France
lun. 6/244:20 pmOPO - IAD
1 stop31h 50mAir France
Deal found 6/9$887
lun. 6/175:25 pmIAD - OPO
1 stop23h 50mDelta
dom. 6/2311:25 amOPO - IAD
1 stop33h 10mDelta
Deal found 6/9$894
lun. 6/175:03 pmIAD - OPO
2 stops34h 22mAir France
lun. 6/244:20 pmOPO - IAD
2 stops29h 07mAir France
Deal found 6/9$897
jue. 6/206:30 amIAD - LIS
2 stops34h 05mMultiple Airlines
mié. 6/267:05 amLIS - IAD
2 stops17h 15mMultiple Airlines
Deal found 6/9$922
mié. 6/196:25 pmIAD - OPO
1 stop33h 00mDelta
dom. 6/2311:25 amOPO - IAD
1 stop33h 10mDelta
Deal found 6/9$924
mié. 6/191:08 pmIAD - OPO
2 stops16h 32mDelta
mar. 6/255:00 amOPO - IAD
1 stop16h 00mDelta
Deal found 6/9$940
dom. 6/166:50 pmIAD - LIS
1 stop20h 30mMultiple Airlines
mié. 6/196:25 amLIS - IAD
2 stops41h 55mMultiple Airlines
Deal found 6/10$945
mié. 6/191:08 pmIAD - OPO
2 stops16h 32mDelta
mar. 6/255:00 amOPO - IAD
2 stops17h 27mDelta
Deal found 6/9$950
lun. 6/178:45 pmIAD - OPO
1 stop33h 45mSWISS
lun. 6/247:15 pmOPO - IAD
1 stop26h 00mSWISS
Deal found 6/9$991

One-way flights to Portugal from Dulles Intl

Search for one-way flight options from Dulles Intl to Portugal. 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 3,080,152 searches. Data last updated junio 10, 2024.
Take a look at some of the best available options we've come across on one-way flights from Washington, D.C. to Portugal. Those needing a return flight from Washington, D.C. to Portugal can use the search form above.
dom. 8/185:40 pmIAD - OPO
1 stop10h 20mTAP AIR PORTUGAL
Deal found 6/9$260
lun. 7/225:35 pmIAD - LIS
Nonstop7h 30mTAP AIR PORTUGAL
Deal found 6/9$264
dom. 7/2110:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Deal found 6/9$293
mar. 9/246:50 pmIAD - LIS
2 stops20h 10mMultiple Airlines
Deal found 6/9$300
mar. 7/305:00 pmIAD - LIS
Nonstop7h 30mTAP AIR PORTUGAL
Deal found 6/9$304
mar. 9/106:50 pmIAD - LIS
2 stops20h 10mMultiple Airlines
Deal found 6/9$305
mié. 10/98:30 pmIAD - OPO
2 stops17h 00mMultiple Airlines
Deal found 6/9$307
dom. 7/1410:20 pmIAD - FAO
2 stops20h 00mMultiple Airlines
Deal found 6/9$307
lun. 8/2611:15 pmIAD - LIS
2 stops28h 30mMultiple Airlines
Deal found 6/9$311

Find flights from Dulles Intl to Portugal within your budget

Customize your flight search to find flights from Dulles Intl to Portugal 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 3,080,152 searches. Data last updated junio 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$378 - $501

Route

Depart

Return

Price

Washington, D.C. Dulles IntlLisbon Humberto Delgado

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 12/5

1 stop21h 10m

Lisbon Humberto Delgado

lun. 12/9

1 stop24h 40m

$378

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 8/13

1 stop11h 00m

Porto

jue. 9/5

1 stop13h 20m

$402

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

sáb. 11/30

1 stop11h 05m

Porto

vie. 12/6

1 stop12h 40m

$422

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

dom. 11/10

1 stop12h 50m

Porto

vie. 11/15

1 stop12h 40m

$435

Washington, D.C. Dulles IntlLisbon Humberto Delgado

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 11/5

1 stop22h 25m

Lisbon Humberto Delgado

mar. 11/12

2 stops26h 18m

$473

Washington, D.C. Dulles IntlLisbon Humberto Delgado

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 11/5

1 stop18h 45m

Lisbon Humberto Delgado

lun. 11/11

1 stop26h 10m

$478

Washington, D.C. Dulles IntlLisbon Humberto Delgado

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

lun. 11/25

2 stops20h 25m

Lisbon Humberto Delgado

lun. 12/2

2 stops30h 15m

$494

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 11/20

1 stop13h 20m

Porto

mar. 11/26

1 stop14h 50m

$498

Washington, D.C. Dulles IntlLisbon Humberto Delgado

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mié. 11/13

1 stop18h 50m

Lisbon Humberto Delgado

mié. 11/20

2 stops18h 25m

$501

Flights are sorted by cheapest first

Deals found on 6/9

No data available for this route at this time. Please check back soon.

Best time to book a flight from Dulles Intl to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated junio 10, 2024.
Read reviews from past customers who have flown SWISS, United Airlines and Delta from Washington, D.C. to Portugal. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.0
Very good
10,295 reviews
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.9
Good
1,473 reviews
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.8
Good
1,359 reviews
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.7
Good
1,912 reviews
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.5
Good
1,707 reviews
8.0
Very good
10,295 reviews

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Washington, D.C. Dulles Intl Airport to Portugal for under $400 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Portugal for under $400. The cheapest flight booked recently is on PLAY for just $378, but on average you can expect to pay $422.

  • Are there nonstop flights from Washington, D.C. Dulles Intl Airport to Portugal for under $500 on Cheapflights?

    Cheapflights has at least 20 direct flights from Washington, D.C. Dulles Intl Airport to Portugal under $500. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to Portugal is less than $570.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Portugal for under $900?

    There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Portugal within the next 7 days for less than $900.

  • What days are nonstop flights available from Washington, D.C. Dulles Intl Airport to Portugal?

    Nonstop flights can be found on the following days: Monday.

  • How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per day?

    Per day, 2 flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average.
    Afternoon (Noon - 6pm) - 100% of flight departures

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Portugal?

    PLAY, TAP AIR PORTUGAL, and Delta can get you from Washington, D.C. Dulles Intl Airport to Portugal in just under 11h. Your travel time can differ by up to 10h 10m. The distance between Washington, D.C. Dulles Intl Airport and Portugal is about 3602 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Portugal?

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Portugal?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Portugal are TAP AIR PORTUGAL (80%), JetBlue (79%) and Air Canada (67%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Portugal?

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Portugal? While on average our users pay $1,611, our data indicates the cheapest price to be $329. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $378.

  • What does IAD to LIS mean?

    IAD and LIS are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. IAD to LIS refers to a flight route from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Porto Airport (OPO), Faro Airport (FAO), Funchal Madeira Airport (FNC), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER).

  • Can I find deals for flights from Dulles Intl to Portugal that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Portugal 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 Dulles Intl to Portugal with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Portugal 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 Dulles Intl to Portugal that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Portugal?

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

  • Can I find deals for business class flights from Dulles Intl to Portugal?

    Yes. Cheapflights offers flight deals from Dulles Intl to Portugal 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 Dulles Intl to Portugal that allow pets onboard?

    Many airlines flying from Dulles Intl to Portugal 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 Dulles Intl to Portugal?

    Yes, you can often find last-minute deals on Dulles Intl to Portugal 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 Washington, D.C. Dulles Intl Airport to Portugal flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Portugal flight deals you see on this page were last updated on 6/10.

  • What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Portugal?

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Portugal?

    Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portugal (average of $595). Flying from Washington, D.C. Dulles Intl Airport to Portugal in June is currently the most expensive (average of $1,194). 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.

See more FAQs

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Alternative routes for Dulles Intl to Portugal
See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Dulles Intl to Portugal

Discover the top 10 airlines that operate flights from Dulles Intl to Portugal. 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 3,080,152 searches. Data last updated junio 10, 2024.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$296Average$380FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$413Average$669FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$418Average$757FlexibilityNo cancel feeOn-time77%
DeltaCheapest$421Average$796FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$423Average$730FlexibilityNo cancel feeOn-time76%
KLMCheapest$428Average$720FlexibilityNo cancel feeOn-time75%
Brussels AirlinesCheapest$435Average$563FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$457Average$700FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$478Average$999FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$485Average$1,117FlexibilityNo cancel feeOn-time69%

Search flights from Dulles Intl to Portugal by cabin class

Find flights from Dulles Intl to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Dulles Intl to Portugal

Find hourly flight availability from Dulles Intl to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 10, 2024.
1%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
11%of flight departuresAfternoonNoon to 6 pm
88%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM
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