Cheap flights from United Kingdom to Seattle

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How to find the cheapest flight from
United Kingdom to Seattle (SEA)

All the information you need to plan the best null to SEA flight in 2021: compare United Kingdom to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
How far in advance should I book a flight from United Kingdom to Seattle?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 52 days in advance, which can save you up to 51% on flights from United Kingdom to Seattle compared to booking the week you need them. Waiting 52 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 £438. For sooner than that we have options available in the next 3 days from £574.

What is the cheapest month to fly from United Kingdom to Seattle?

The best pricing can be found in the month of February. Prices to Seattle from United Kingdom average £387. You can even find prices in February for less than £387, as users have found deals to Seattle from as low as £255. The month of July appears to be one of the more expensive times to travel to Seattle from United Kingdom. Flying in the targeted month can save you up to 37%.

Cheap flights from United Kingdom to Seattle in May, June 2021

The best prices found for United Kingdom to SEA flights in May, June
24 Jun - 1 Jul
£349pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
8 Jun - 28 Jun
£386pp
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
1 Jun - 30 Jun
£388pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
LHR
London Heathrow

United Kingdom to Seattle 2021 flight deals

Cheap flights to Seattle from United Kingdom found for this year
26 Jul - 2 Aug
£321pp
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
17 Aug - 24 Aug
£337pp
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
20 Jul - 2 Aug
£343pp
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow

Direct flights to Seattle from United Kingdom

Save time with United Kingdom to Seattle direct flight deals
26 Oct - 9 Nov
£397pp
LHR
London Heathrow
Virgin Atlantic
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
Direct
LHR
London Heathrow
6 Oct - 3 Nov
£418pp
LHR
London Heathrow
Virgin Atlantic
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
Direct
LHR
London Heathrow
28 Oct - 8 Nov
£424pp
LHR
London Heathrow
Virgin Atlantic
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
Direct
LHR
London Heathrow

Last-minute flights from United Kingdom to Seattle

Late deals on return flights to Seattle from United Kingdom, departing today and this week
18 May - 26 May
£464pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
21 May - 23 May
£474pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
17 May - 5 Jun
£492pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow

One-way flights to Seattle from United Kingdom

The cheapest one-way flights from United Kingdom to Seattle
11:40 - 07:50
Multiple Airlines
2 stops
52h 10m
MAN - SEA
Multiple Airlines
£254
Kiwi.com
14:45 - 04:20
Multiple Airlines
2 stops
45h 35m
LHR - SEA
Multiple Airlines
£256
Kiwi.com
17:00 - 07:50
Multiple Airlines
2 stops
46h 50m
STN - SEA
Multiple Airlines
£260
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">United Kingdom</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From United Kingdom to Seattle

Are flight prices decreasing from United Kingdom to Seattle due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both United Kingdom and Seattle for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from United Kingdom to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

British Airways, Virgin Atlantic, and Aer Lingus are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

What airport do you fly into for flights to Seattle from United Kingdom?

For a flight from United Kingdom to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the centre of the city.

Can I find flights from United Kingdom to Seattle for under £354 on Cheapflights?

Yes, there are multiple flights from United Kingdom to Seattle for under £354. The cheapest flight booked recently is on Icelandair for just £321, but on average you can expect to pay £354.

Are there direct flights from United Kingdom to Seattle for under £424 on Cheapflights?

Cheapflights has 20 direct flights from United Kingdom to Seattle under £424. A good price for a direct flight from United Kingdom to Seattle is less than £443.

Are there last-minute flights available from United Kingdom to Seattle for under £495?

There are currently 20+ open flights from United Kingdom to Seattle within the next 7 days for less than £495.

What are the most popular airlines that fly from United Kingdom to Seattle?

When booking a flight from United Kingdom to Seattle, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

What are the most popular routes from United Kingdom to Seattle?

When deciding which route to take from United Kingdom to Seattle, consider London Heathrow - Seattle/Tacoma Intl, London City - Seattle/Tacoma Intl or London Gatwick - Seattle/Tacoma Intl, as they are the most popular.

What are the cheapest flights from United Kingdom to Seattle?

Looking at all options, your cheapest flight can be booked for £258. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for £344 on average our data indicates £1,293 when flying from United Kingdom to Seattle

How long does is the flight from United Kingdom to Seattle?

For as low as £383, Virgin Atlantic can have you in Seattle from United Kingdom in 9h 45m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What is the cheapest airline to fly from United Kingdom to Seattle return?

According to our current data, Icelandair (£322), offers the cheapest pricing from United Kingdom to Seattle.

Departure points for flights from United Kingdom to Seattle

Select to see more specific information for flights to Seattle from all departure points in United Kingdom.

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from United Kingdom to Seattle.
Today's exchange rate
£1 = $1.42
Average temperature for May in Seattle
19.0 °C
Avg rainfall for May in Seattle
45.0 mm

Airports servicing Seattle

Top 10 airlines flying from United Kingdom to Seattle

The chart below displays the airlines Cheapflights users travelling from United Kingdom to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Austrian Airlines
£311 £439 No cancel fee 78%
Search Austrian Airlines flights
Norwegian
£426 £582 No cancel fee 74%
Search Norwegian flights
Iberia
£402 £690 No cancel fee 77%
Search Iberia flights
Norwegian Air UK
£386 £707 No cancel fee N/A
Search Norwegian Air UK flights
Malta MedAir
£456 £743 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by Malta MedAir. Please check directly on their website for additional information.

Search Malta MedAir flights
Condor
£516 £747 No cancel fee 76%
Search Condor flights
Delta
£396 £762 No cancel fee N/A
Search Delta flights
SWISS
£510 £767 No cancel fee 79%
Search SWISS flights
Air France
£415 £811 No cancel fee 77%
Search Air France flights
Finnair
£454 £820 No cancel fee 76%
Search Finnair flights
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