Cheap Flights from Seattle (SEA) to London (LON)

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Prices shown below were available within the past 3 days for the period specified and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from Seattle to London

Flexible with dates? We find the best price for the week of the day you select *Prices may vary after you search.
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week: Apr 28 - May 4
$323
$262
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$286
$285
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$514
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Route information

Local currency and cost comparison

TrainLocal, one-way ticket
33%Trains are 33% more expensive in London than in Seattle.
Seattle$2.75
London$3.65
MealMid-priced restaurant
4%The average meal is 4% more expensive in London than in Seattle.
Seattle$25.00
London$26.04
TaxiStandard daytime start rate
121%Taxis are 121% more expensive in London than in Seattle.
Seattle$2.65
London$5.86
CoffeeRegular cappuccino
11%Coffee in London is 11% cheaper than in Seattle.
Seattle$5.50
London$4.92
Exchange rate
1 USD = 0.77 GBP
1 GBP = 1.31 USD
Last checked on Thu, 04/17
Distance: 4784 miles
Seattle airports
Seattle All Airports (SEA)How far from city center: 11 miles
London airports
Heathrow (LHR)How far from city center: 14 miles
Gatwick (LGW)How far from city center: 25 miles
Luton International (LTN)How far from city center: 27 miles
Stansted (STN)How far from city center: 30 miles
London City (LCY)How far from city center: 7 miles
Southend (SEN)How far from city center: 35 miles

Are you searching for flights from Seattle to London?

Are you planning to travel to London for vacations, business or family visits? eDreams offers you the cheapest flights and best deals departing from Seattle. With our fast search engine you will get a large selection of airfares from standard and low cost airlines worldwide and easily book your tickets for this route. If you are flexible we help you identify the cheapest day to fly to London and if you need to leave soon you can check our most convenient last minute fares. Read all the useful information about your next destination and proceed to the reservation, indicating your flight dates and completing your travel booking with hotels and car rental!

Frequently asked questions about flights from Seattle to London

What are the benefits of booking flexible flight tickets?
Using the flexible flight ticket, you're guaranteed a refund or a rebooking option (without fees) in case of flight cancellations when travelling to United Kingdom. At eDreams have you covered!
For flights from Seattle to London, how can I find the cheapest price?
The cheapest price for a flight from Seattle to London is $251. At eDreams we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.
Is London more expensive than Seattle to visit?

Looking at cab fares, a ride in London costs about $ 5.86 USD, 121% more expensive than Seattle, with a fare of $ 2.65 USD,

while train tickets cost 33% more at London: $ 3.65 USD versus $ 2.75 USD at Seattle.

If you compare the price of a lunch meal, however, you can find it from 26.04 USD in London, 4% more than the 25.00 USD in Seattle.

The price of the coffee is around 11% cheaper in London, with an average of 4.92 USD, while in Seattle the coffee costs 5.50 USD.

When booking, when is the best time to get the best prices for flights from Seattle to London?
The most popular months to book a trip from Seattle to London are January, May and February, based on the searches of our customers.
When is the best time to travel from Seattle to London?
The best time of the year to visit London depends on lots of personal preferences, especially the price. Regarding popularity, June is the best month to fly to London from Seattle in terms of searches from our customers, followed by July and May. If you prefer to avoid the busy season and get away from the crowds January, February and November are the months with fewer searches for Seattle - London.
How long does the flight from Seattle to London take?
Flight length from Seattle to London is around 11:28 hours on average, at an average distance of 9,148 km, for flights for the route (which may have 1 or more stops in other cities in between).
How is the weather in London compared to Seattle?
While in Seattle the temperatures can reach an average of 31.31 ºC in summer, with precipitation levels up to 9 mm ,London's temperatures can go up to 29.01 ºC during the hot season, with 9 mm average of rain rate . In winter, however, weather indicators show around -3.09 ºC in London, compared to the -3.71 ºC average degrees reported in Seattle. During the winter period, Seattle can register 12 mm precipitation, while London have an average of 6 mm rain level.
Which airports have flights between Seattle and London?

The main route from Seattle to London is: Seattle All Airports (SEA) to Heathrow (LHR). The following airlines fly this route:

Iberia.

Icelandair.

Air France.

Alternatively, you can find Seattle - London flights between Seattle All Airports (SEA) to Gatwick (LGW) with the following airline(s) flying the route: Icelandair.

Norse Atlantic UK.

Which airlines fly from Seattle to London?

The airlines that fly non-stop from Seattle to London are:

  • Marabu Airlines.
  • Icelandair.
  • Virgin Atlantic.

Icelandair, stopping at Reykjavik during at least 90 minutes.

  • United Airlines, with 347 minutes of layover in Washington, D.C. (ARLINGTON COUNTY).

Plan your trip

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