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Cheap flights from Seattle to London from £195

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 29/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Wed 29/5

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Easily compare return flights from Seattle to London

Below you can see the best fares for your return flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to London by changing tabs
Multiple Airlines
24 Sept
SEA17:00Seattle/Tacoma Intl
33h 55m
1 stop
LGW10:55London Gatwick
8 Oct
LGW12:00London Gatwick
16h 21m
1 stop
SEA20:21Seattle/Tacoma Intl
Lufthansa
15 Oct
SEA15:10Seattle/Tacoma Intl
14h 10m
1 stop
LHR13:20London Heathrow
29 Oct
LHR11:10London Heathrow
13h 55m
1 stop
SEA18:05Seattle/Tacoma Intl
Icelandair
8 Oct
SEA15:50Seattle/Tacoma Intl
11h 55m
1 stop
LGW11:45London Gatwick
22 Oct
LGW13:00London Gatwick
12h 55m
1 stop
SEA17:55Seattle/Tacoma Intl
Virgin Atlantic
8 Oct
SEA11:15Seattle/Tacoma Intl
14h 45m
1 stop
LGW10:00London Gatwick
22 Oct
LGW12:00London Gatwick
18h 20m
1 stop
SEA22:20Seattle/Tacoma Intl
American Airlines
15 Oct
SEA23:59Seattle/Tacoma Intl
24h 11m
2 stops
LGW08:10London Gatwick
29 Oct
LGW15:00London Gatwick
33h 21m
2 stops
SEA17:21Seattle/Tacoma Intl
Air Canada
29 Sept
SEA05:50Seattle/Tacoma Intl
16h 40m
2 stops
LHR06:30London Heathrow
24 Oct
LHR08:40London Heathrow
17h 46m
2 stops
SEA18:26Seattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to London

If you're looking for one-way flights from Seattle to London, view some of our deals below provided by Icelandair, KLM and Lufthansa
Icelandair
29 Sept
SEA15:50Seattle/Tacoma Intl
11h 55m
1 stop
LGW11:45London Gatwick
Multiple Airlines
30 Sept
SEA13:50Seattle/Tacoma Intl
19h 05m
2 stops
LTN16:55London Luton
Lufthansa
9 Oct
SEA14:15Seattle/Tacoma Intl
18h 10m
1 stop
LCY16:25London City

Search last-minute flights to London from Seattle

Find and compare return flight prices for your last-minute flight from Seattle to London
Multiple Airlines
21 May
SEA07:40Seattle/Tacoma Intl
18h 20m
1 stop
LHR10:00London Heathrow
11 Jun
LHR10:50London Heathrow
19h 27m
2 stops
SEA22:17Seattle/Tacoma Intl
United Airlines
21 May
SEA07:25Seattle/Tacoma Intl
18h 15m
2 stops
LHR09:40London Heathrow
4 Jun
LHR09:00London Heathrow
15h 59m
1 stop
SEA16:59Seattle/Tacoma Intl
Delta
21 May
SEA21:10Seattle/Tacoma Intl
9h 40m
LHR14:50London Heathrow
12 Jun
LHR11:30London Heathrow
14h 05m
1 stop
SEA17:35Seattle/Tacoma Intl
SWISS
20 May
SEA14:50Seattle/Tacoma Intl
19h 00m
2 stops
LGW17:50London Gatwick
10 Jun
LGW18:45London Gatwick
31h 42m
2 stops
SEA18:27Seattle/Tacoma Intl
Virgin Atlantic
21 May
SEA21:10Seattle/Tacoma Intl
9h 40m
LHR14:50London Heathrow
10 Jun
LHR17:35London Heathrow
25h 45m
1 stop
SEA11:20Seattle/Tacoma Intl
Lufthansa
21 May
SEA10:40Seattle/Tacoma Intl
17h 10m
2 stops
LHR11:50London Heathrow
10 Jun
LHR17:50London Heathrow
31h 09m
1 stop
SEA16:59Seattle/Tacoma Intl

Air Canada flights from Seattle to London

Our best Air Canada deals on Seattle to London flight tickets
Air Canada
29 Sept
SEA05:50Seattle/Tacoma Intl
16h 40m
2 stops
LHR06:30London Heathrow
24 Oct
LHR08:40London Heathrow
17h 46m
2 stops
SEA18:26Seattle/Tacoma Intl
Air Canada
2 Oct
SEA11:35Seattle/Tacoma Intl
16h 15m
1 stop
LHR11:50London Heathrow
24 Oct
LHR08:40London Heathrow
17h 46m
2 stops
SEA18:26Seattle/Tacoma Intl
Air Canada
15 Oct
SEA05:50Seattle/Tacoma Intl
16h 45m
2 stops
LHR06:35London Heathrow
29 Oct
LHR13:25London Heathrow
26h 51m
2 stops
SEA09:16Seattle/Tacoma Intl

Delta flights from Seattle to London

Our best Delta deals on Seattle to London flight tickets
Delta
30 Sept
SEA16:30Seattle/Tacoma Intl
9h 20m
LHR09:50London Heathrow
10 Oct
LHR06:15London Heathrow
13h 05m
1 stop
SEA11:20Seattle/Tacoma Intl
Delta
2 Oct
SEA17:30Seattle/Tacoma Intl
15h 00m
1 stop
LHR16:30London Heathrow
24 Oct
LHR11:30London Heathrow
14h 20m
1 stop
SEA17:50Seattle/Tacoma Intl
Delta
23 Sept
SEA00:30Seattle/Tacoma Intl
22h 45m
1 stop
LHR07:15London Heathrow
8 Oct
LHR06:15London Heathrow
13h 05m
1 stop
SEA11:20Seattle/Tacoma Intl

How to get the cheapest flight ticket from Seattle to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Seattle to London?

November. The cheapest time of year to fly to London from Seattle is November. The most expensive is June.

What is the cheapest day to depart Seattle for London?

Thursday. The cheapest day of the week is usually Thursday. The most expensive is usually Friday.

When is the cheapest time to fly from Seattle to London?

At midday. Seattle to London flights are approximately 31% more expensive in the morning than at midday

What is the cheapest airline that flies to London from Seattle?

Icelandair. Air France, British Airways, and Finnair are the most popular carriers operating from Seattle to London

What is the cheapest Seattle to London flight route?

Seattle/Tacoma Intl - London Gatwick. Fly from Seattle/Tacoma Intl to London Gatwick for the best Seattle - London flight prices

How far in advance should you book Seattle to London flights?

7 days before. The cheapest time to buy a flight from Seattle to London is approximately 7 days to departure

How many flights depart from Seattle to London on average per day?

As of May 2024, 19 flights take off from Seattle and land in London each day. The most common flight departure time for this route is 18:00, with 51% of daily flights taking off in the evening.

How many flights depart from Seattle to London on average per week?

135 flights are operational weekly from Seattle to London as of May 2024. The most popular departure day for this route is Monday, with 15% of flights per week taking off on this day.

Can stopping save me money on Seattle to London flights?

You could potentially save up to 12% on your flight if you consider stops on a Seattle to London flight.

Cheap Seattle to London (SEA to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to London

Best price found

£195

Fastest flight time

9h 20m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in London

5 airports
The best one-way flight to London from Seattle in the past 72 hours is £195. The best return flight deal from Seattle to London found on momondo in the last 72 hours is £421.
The fastest flight from Seattle to London takes 9h 20m
Direct flights go from Seattle to London on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: Virgin Atlantic, Delta and Finnair.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

  • How far is Seattle/Tacoma Intl to London by plane?

    London is 4781.3 mi away from Seattle/Tacoma Intl. Typically, this will take 9h 20m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London?

    Prices for flights from Seattle/Tacoma Intl Airport to London were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to London?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Best airlines flying from Seattle to London

Compare and see reviews for airlines that fly from Seattle to London with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £427Free CancellationRating
7.0
1,290 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £503Free CancellationRating
7.7
735 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £525Free CancellationRating
6.8
6,829 reviews
Search British Airways flights
Air FrancePriceFrom £529Free CancellationRating
7.5
1,764 reviews
Search Air France flights
FinnairPriceFrom £532Free CancellationRating
7.7
1,376 reviews
Search Finnair flights
  • Virgin Atlantic Flights From Seattle to London

    Virgin Atlantic flies from Seattle to London around 14 times per week, with 735 momondo users rating the airline 7.7/10. The cheapest Virgin Atlantic deal from Seattle to London in the last 72 hours was £638 (round-trip), much lower than the average airfare cost of £926 for Virgin Atlantic flights on this route.

  • Finnair Flights From Seattle to London

    Another popular option for Seattle to London flights is Finnair (7.7/10, 1,376 ratings). Finnair flies from Seattle to London around 13 times per week, with deals starting from £674 round-trip and rising to an average price of around £887.


Why use momondo?

Why should I use momondo to find a flight deal from Seattle to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to London with flexible booking policies on momondo?

Flights from Seattle to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to London?

Once all potential Seattle to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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Wed 22/5
Wed 29/5
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