Popular in | June |
---|---|
Cheapest in | November |
Round-trip from | $643 |
One-way from | $247 |
Friday flights are found to be more expensive to fly from Seattle to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 8 days in advance, which can save you up to 65% on flights from Seattle to London compared to booking the week you need them. Waiting 8 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 $646. For sooner than that we have options available in the next 3 days from $1,159.
November is one of the best times of the year to fly to London from Seattle. Prices for November average $861 per person but you can even find prices for as low as $560. The most expensive prices can be found in the month of June. Opting for a November flight can save you 39% on your journey compared to booking in June
One of the essential ways to save on airfare from Seattle to London is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 17% on airfare.
One of the most popular airlines traveling from Seattle to London is Icelandair. Seattle to London flights are typically 58% cheaper than other airlines traveling the same route. Flights from Icelandair typically cost $983.80 RT. The cheapest Icelandair flight found for this route was $637. The most popular departure airport in Seattle when flying to London is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting London is London Heathrow Airport. When flying from Seattle to London, Icelandair flights are 5% more popular than any other airline flying that same route.
Air Canada is one of the most popular airlines used for those traveling from Seattle to London. Flights on this route from Air Canada typically cost $1,255.15 RT, a price that is 51% cheaper than the average Seattle to London flight. The cheapest flight found was $944 RT. The most popular departure airport in Seattle when flying to London is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting London is London Heathrow Airport. When flying from Seattle to London, Air Canada flights are 5% more popular than any other airline flying that same route.
Fly from
Fly to
Budget
$569 - $645
Route
Depart
Return
Price
Seattle/Tacoma IntlLondon Gatwick
SEA - LGW
SEALGW
Seattle/Tacoma Intl
Tue 10/8
1 stop11h 55m
London Gatwick
Tue 10/15
1 stop15h 01m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 10/8
1 stop12h 05m
London Heathrow
Tue 10/22
1 stop28h 30m
Seattle/Tacoma IntlLondon Gatwick
SEA - LGW
SEALGW
Seattle/Tacoma Intl
Tue 10/15
2 stops24h 11m
London Gatwick
Tue 10/29
2 stops33h 21m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 10/2
Nonstop9h 20m
London Heathrow
Tue 10/15
Nonstop9h 45m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 10/1
1 stop14h 04m
London Heathrow
Fri 10/11
Nonstop9h 45m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Sun 10/6
Nonstop9h 20m
London Heathrow
Fri 10/18
1 stop16h 22m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 10/8
1 stop14h 50m
London Heathrow
Tue 10/22
2 stops17h 46m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 10/9
2 stops17h 10m
London Heathrow
Wed 10/16
2 stops22h 55m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Sun 11/3
2 stops20h 30m
London Heathrow
Tue 11/12
1 stop13h 55m
Currently, November is the cheapest month in which you can book a flight from Seattle to London (average of $653). Flying from Seattle to London in June is currently the most expensive (average of $1,158). 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
$673
February
$663
March
$715
April
$692
May
$735
June
$1,158
July
$980
August
$776
September
$743
October
$710
November
$653
December
$671
LON Temperature | 39.2 - 62.6 °F |
---|
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
Boarding
Food
Crew
Overall
Comfort
Entertainment
Reviews
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.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
0%of flight departures | Morning6 am to noon |
52%of flight departures | AfternoonNoon to 6 pm |
47%of flight departures | Evening6 pm to midnight |
Sunday | 20daily flights |
---|---|
Monday | 20daily flights |
Tuesday | 15daily flights |
Wednesday | 20daily flights |
Thursday | 20daily flights |
Friday | 20daily flights |
Saturday | 20daily flights |
When you search for this flight from Seattle to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to London.
Yes! Cheapflights helps users easily find flights from Seattle to London with no change fees.
Not ready to book yet? You can track prices for flights from Seattle to London on Cheapflights with our Price Alert feature and get notified when better prices are available.