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Cheap flights from Washington to the United Kingdom from $271

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to the United Kingdom departing on 12/8. 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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0 bags

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Cheap round-trip flights

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Icelandair Logo
2:35 pm - 10:20 amSEA-EDI
11h 45m1 stop
Icelandair Logo
11:20 am - 6:00 pmEDI-SEA
13h 40m1 stop
$488Icelandair
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Wed, Mar 4 - Sun, Mar 8
Icelandair Logo
2:35 pm - 10:20 amSEA-EDI
11h 45m1 stop
Icelandair Logo
12:20 pm - 5:00 pmEDI-SEA
12h 40m1 stop
$489Icelandair
Find Deal
Mon, Jan 19 - Fri, Jan 30
Multiple Airlines Logo
2:35 pm - 10:30 pmSEA-LTN
23h 55m2 stops
Multiple Airlines Logo
6:50 am - 5:00 pmLTN-SEA
18h 10m2 stops
$543Multiple Airlines
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Sun, Feb 15 - Tue, Feb 24
Scandinavian Airlines Logo
12:45 pm - 5:40 pmSEA-LHR
20h 55m2 stops
Scandinavian Airlines Logo
6:40 am - 10:23 pmLHR-SEA
23h 43m2 stops
$546Scandinavian Airlines
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Thu, Dec 4 - Tue, Dec 9
Multiple Airlines Logo
2:35 pm - 5:50 pmSEA-LGW
19h 15m3 stops
Multiple Airlines Logo
8:50 am - 5:00 pmLGW-SEA
16h 10m2 stops
$546Multiple Airlines
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Tue, Dec 2 - Tue, Dec 9
Aer Lingus Logo
8:05 pm - 4:50 pmSEA-LHR
12h 45m1 stop
Aer Lingus Logo
8:50 am - 6:20 pmLHR-SEA
17h 30m1 stop
$552Aer Lingus
Find Deal
Sun, Nov 30 - Fri, Dec 5
Aer Lingus Logo
8:05 pm - 4:50 pmSEA-LHR
12h 45m1 stop
Aer Lingus Logo
8:50 am - 6:20 pmLHR-SEA
17h 30m1 stop
$553Aer Lingus
Find Deal
Mon, Nov 24 - Wed, Nov 26
Scandinavian Airlines Logo
11:31 am - 9:20 amSEA-LHR
37h 49m2 stops
Scandinavian Airlines Logo
6:40 am - 10:25 pmLHR-SEA
23h 45m2 stops
$565Scandinavian Airlines
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Mon, Feb 16 - Thu, Feb 19
Virgin Atlantic Logo
6:00 am - 7:05 amPDX-LHR
17h 05m1 stop
Virgin Atlantic Logo
11:05 am - 5:35 pmLHR-PDX
14h 30m1 stop
$568Virgin Atlantic
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Wed, Jan 14 - Thu, Jan 29
Virgin Atlantic Logo
2:23 pm - 12:50 pmPDX-LHR
14h 27m1 stop
Virgin Atlantic Logo
9:40 am - 8:52 pmLHR-PDX
19h 12m2 stops
$600Virgin Atlantic
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Mon, Dec 1 - Fri, Dec 12

Scandinavian Airlines flights from State of Washington to United Kingdom

Our best Scandinavian Airlines deals on State of Washington to United Kingdom flight tickets
Scandinavian Airlines
Dec 4
SEA12:45 pmSeattle/Tacoma Intl
20h 55m
2 stops
LHR5:40 pmLondon Heathrow
Dec 9
LHR6:40 amLondon Heathrow
23h 43m
2 stops
SEA10:23 pmSeattle/Tacoma Intl
$546
Find similar
Scandinavian Airlines
Feb 16
SEA11:31 amSeattle/Tacoma Intl
37h 49m
2 stops
LHR9:20 amLondon Heathrow
Feb 19
LHR6:40 amLondon Heathrow
23h 45m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$565
Find similar
Scandinavian Airlines
Mar 2
PDX10:24 amPortland
26h 56m
3 stops
LHR9:20 pmLondon Heathrow
Mar 10
LHR7:05 amLondon Heathrow
22h 17m
3 stops
PDX10:22 pmPortland
$607
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British Airways flights from State of Washington to United Kingdom

Our best British Airways deals on State of Washington to United Kingdom flight tickets
British Airways
Dec 31
SEA6:50 pmSeattle/Tacoma Intl
9h 30m
LHR12:20 pmLondon Heathrow
Mar 5
LHR2:55 pmLondon Heathrow
10h 00m
SEA4:55 pmSeattle/Tacoma Intl
$581
Find similar
British Airways
Dec 3
PDX5:45 pmPortland
9h 35m
LHR11:20 amLondon Heathrow
Dec 10
LHR10:05 amLondon Heathrow
17h 05m
1 stop
PDX7:10 pmPortland
$585
Find similar
British Airways
Dec 3
PDX12:00 pmPortland
14h 00m
1 stop
LHR10:00 amLondon Heathrow
Dec 9
LHR3:00 pmLondon Heathrow
16h 23m
1 stop
PDX11:23 pmPortland
$590
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momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to United Kingdom 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, momondo users made 832,500 searches. Data last updated November 9, 2025.
Use the filters below to find and compare flights from Washington to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-10:20 am

1 stop11h 45m

Edinburgh Turnhouse

Sun 3/8

11:20 am-6:00 pm

1 stop13h 40m

$488

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 1/19

2:35 pm-10:20 am

1 stop11h 45m

Edinburgh Turnhouse

Fri 1/30

12:20 pm-5:00 pm

1 stop12h 40m

$489

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-10:30 pm

2 stops23h 55m

London Luton

Tue 2/24

6:50 am-5:00 pm

2 stops18h 10m

$543

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Thu 12/4

12:45 pm-5:40 pm

2 stops20h 55m

London Heathrow

Tue 12/9

6:40 am-10:23 pm

2 stops23h 43m

$546

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 12/2

2:35 pm-5:50 pm

3 stops19h 15m

London Gatwick

Tue 12/9

8:50 am-5:00 pm

2 stops16h 10m

$546

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 11/30

8:05 pm-4:50 pm

1 stop12h 45m

London Heathrow

Fri 12/5

8:50 am-6:20 pm

1 stop17h 30m

$552

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 11/24

8:05 pm-4:50 pm

1 stop12h 45m

London Heathrow

Wed 11/26

8:50 am-6:20 pm

1 stop17h 30m

$553

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 2/16

11:31 am-9:20 am

2 stops37h 49m

London Heathrow

Thu 2/19

6:40 am-10:25 pm

2 stops23h 45m

$565

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 1/14

6:00 am-7:05 am

1 stop17h 05m

London Heathrow

Thu 1/29

11:05 am-5:35 pm

1 stop14h 30m

$568

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 12/1

2:23 pm-12:50 pm

1 stop14h 27m

London Heathrow

Fri 12/12

9:40 am-8:52 pm

2 stops19h 12m

$600

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from State of Washington to United Kingdom

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 to United Kingdom?

In general, October is the cheapest month to fly from State of Washington to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $663. If you aren’t able to travel to United Kingdom during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $679.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from State of Washington to United Kingdom is on a Tuesday when prices can be found for as low as $807. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $907.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is in the evening. momondo users have found flights departing from State of Washington to United Kingdom in the evening for as low as $836. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the morning, with an average ticket price of $980. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington to United Kingdom flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Washington - United Kingdom flight prices

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $803 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from State of Washington for as low as $705 on momondo.

What cabin class options are available on Washington to United Kingdom flights?

There are 4 cabin classes available to choose from on Washington to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to United Kingdom flights?

You could potentially save up to 9% on your flight if you consider stops on a State of Washington to United Kingdom flight.

Cheap State of Washington to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to United Kingdom

Best Price Found

$472

Fastest flight time

9h 15m

Direct flights

Every day

Airports in United Kingdom

1 airport
The best one-way flight to United Kingdom from State of Washington in the past 72 hours is $472. The best round-trip flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is $670.
The fastest flight from State of Washington to United Kingdom takes 9h 15m
Direct flights go from State of Washington to United Kingdom every day.
There is 1 airport near United Kingdom: London Heathrow (LHR)
Search flight deals

  • When did momondo last update prices for flights from Washington to United Kingdom?

    Prices for flights from Washington to United Kingdom were last updated today.

  • How many operators does momondo search for flights from Washington to United Kingdom?

  • How old do you have to be to fly from Washington to United Kingdom?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from State of Washington to United Kingdom?

Best airlines flying from State of Washington to United Kingdom

Compare and see reviews for airlines that fly from State of Washington to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $213Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
Scandinavian AirlinesPriceFrom $465Free CancellationRating
7.4
1,568 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $482Free CancellationRating
7.1
572 reviews
Search Icelandair flights
Aer LingusPriceFrom $500Free CancellationRating
7.2
1,366 reviews
Search Aer Lingus flights
Air FrancePriceFrom $517Free CancellationRating
7.4
1,486 reviews
Search Air France flights
American AirlinesPriceFrom $518Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,505 reviews
Search British Airways flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $553Free CancellationRating
8.0
11,255 reviews
Search Alaska Airlines flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,335 reviews
Search Finnair flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to United Kingdom?

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

Can I find flights from Washington to United Kingdom with flexible booking policies on momondo?

Yes. All flights to United Kingdom from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to United Kingdom.

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

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Washington and alert you when they change.

An easier way to manage your United Kingdom trip

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Popular flights according to clicks in the last 7 days on momondo
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