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Cheap flights from Washington to the United Kingdom from $203

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 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to the United Kingdom

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
2:35 pm - 4:30 pm
SEA
-
GLA
17h 55m
1 stop
Virgin Atlantic Logo
5:40 am - 11:47 am
GLA
-
SEA
14h 07m
1 stop
$448Virgin Atlantic
Sun, Nov 15 - Wed, Nov 18
Virgin Atlantic Logo
11:15 am - 4:30 pm
SEA
-
GLA
21h 15m
2 stops
Virgin Atlantic Logo
5:40 am - 11:47 am
GLA
-
SEA
14h 07m
1 stop
$450Virgin Atlantic
Sun, Nov 15 - Wed, Nov 18
Virgin Atlantic Logo
11:15 am - 4:30 pm
SEA
-
GLA
21h 15m
2 stops
Virgin Atlantic Logo
5:40 am - 7:23 pm
GLA
-
SEA
21h 43m
2 stops
$455Virgin Atlantic
Sun, Nov 15 - Wed, Nov 18
Virgin Atlantic Logo
1:30 pm - 4:30 pm
SEA
-
EDI
19h 00m
1 stop
Virgin Atlantic Logo
5:45 am - 11:52 am
EDI
-
SEA
14h 07m
1 stop
$536Virgin Atlantic
Tue, Oct 6 - Sun, Oct 18
Multiple Airlines Logo
9:40 pm - 11:05 pm
SEA
-
GLA
17h 25m
1 stop
Multiple Airlines Logo
8:50 pm - 6:55 pm
GLA
-
SEA
30h 05m
1 stop
$704Multiple Airlines
Sun, Aug 2 - Wed, Aug 12
Multiple Airlines Logo
9:40 pm - 7:35 pm
SEA
-
GLA
13h 55m
1 stop
Multiple Airlines Logo
8:35 am - 7:00 pm
GLA
-
SEA
18h 25m
1 stop
$708Multiple Airlines
Tue, Sep 8 - Tue, Sep 22
Icelandair Logo
3:40 pm - 11:45 am
SEA
-
LGW
12h 05m
1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
$713Icelandair
Mon, Aug 24 - Tue, Sep 8
Icelandair Logo
3:40 pm - 11:55 am
SEA
-
LHR
12h 15m
1 stop
Icelandair Logo
9:25 pm - 11:45 am
LHR
-
SEA
22h 20m
1 stop
$714Icelandair
Mon, Aug 3 - Tue, Aug 18
Condor Logo
6:05 pm - 6:50 pm
SEA
-
LGW
16h 45m
1 stop
Condor Logo
10:20 am - 4:00 pm
LGW
-
SEA
13h 40m
1 stop
$715Condor
Thu, Sep 17 - Fri, Sep 25
Scandinavian Airlines Logo
3:55 pm - 4:25 pm
SEA
-
LHR
16h 30m
2 stops
Scandinavian Airlines Logo
6:40 am - 1:45 pm
LHR
-
SEA
15h 05m
1 stop
$732Scandinavian Airlines
Sun, Sep 6 - Sat, Sep 12

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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
Sep 12
SEA3:55 pmSeattle/Tacoma Intl
18h 30m
1 stop
EDI6:25 pmEdinburgh Turnhouse
Sep 26
EDI7:10 pmEdinburgh Turnhouse
26h 35m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$731
Scandinavian Airlines
Sep 6
SEA3:55 pmSeattle/Tacoma Intl
16h 30m
2 stops
LHR4:25 pmLondon Heathrow
Sep 21
LHR7:30 pmLondon Heathrow
26h 15m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$732
Scandinavian Airlines
Sep 12
SEA3:55 pmSeattle/Tacoma Intl
18h 30m
1 stop
EDI6:25 pmEdinburgh Turnhouse
Sep 26
EDI7:10 pmEdinburgh Turnhouse
26h 35m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$733

United Airlines flights from State of Washington to United Kingdom

Our best United Airlines deals on State of Washington to United Kingdom flight tickets
United Airlines
Nov 8
PDX7:07 pmPortland
30h 33m
1 stop
LHR9:40 amLondon Heathrow
Nov 14
LHR2:30 pmLondon Heathrow
26h 56m
1 stop
PDX9:26 amPortland
$940
United Airlines
Jul 4
SEA11:11 pmSeattle/Tacoma Intl
26h 59m
2 stops
GLA10:10 amGlasgow Intl
Jul 12
GLA2:00 pmGlasgow Intl
27h 40m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$1,273

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 June 26, 2026.
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

Cheapest round-trip

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 11/15

2:35 pm-4:30 pm

1 stop17h 55m

Glasgow Intl

Wed 11/18

5:40 am-11:47 am

1 stop14h 07m

$448

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 11/15

11:15 am-4:30 pm

2 stops21h 15m

Glasgow Intl

Wed 11/18

5:40 am-11:47 am

1 stop14h 07m

$450

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 11/15

11:15 am-4:30 pm

2 stops21h 15m

Glasgow Intl

Wed 11/18

5:40 am-7:23 pm

2 stops21h 43m

$455

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Tue 10/6

1:30 pm-4:30 pm

1 stop19h 00m

Edinburgh Turnhouse

Sun 10/18

5:45 am-11:52 am

1 stop14h 07m

$536

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 8/2

9:40 pm-11:05 pm

1 stop17h 25m

Glasgow Intl

Wed 8/12

8:50 pm-6:55 pm

1 stop30h 05m

$704

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 9/8

9:40 pm-7:35 pm

1 stop13h 55m

Glasgow Intl

Tue 9/22

8:35 am-7:00 pm

1 stop18h 25m

$708
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 8/24

3:40 pm-11:45 am

1 stop12h 05m

London Gatwick

Tue 9/8

3:40 pm-8:40 pm

1 stop13h 00m

$713

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 8/3

3:40 pm-11:55 am

1 stop12h 15m

London Heathrow

Tue 8/18

9:25 pm-11:45 am

1 stop22h 20m

$714

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 9/17

6:05 pm-6:50 pm

1 stop16h 45m

London Gatwick

Fri 9/25

10:20 am-4:00 pm

1 stop13h 40m

$715

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 9/6

3:55 pm-4:25 pm

2 stops16h 30m

London Heathrow

Sat 9/12

6:40 am-1:45 pm

1 stop15h 05m

$732

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, January 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 $320. If you aren’t able to travel to United Kingdom during the month of January, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $685.

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 Wednesday when prices can be found for as low as $822. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $927.

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 at noon. momondo users have found flights departing from State of Washington to United Kingdom at noon for as low as $859. 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 evening, with an average ticket price of $886. Departure times in the evening 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 from Washington to the 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 $830 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 $722 on momondo.

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

There are 4 cabin classes available to choose from on State of 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 38% 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

$413

Fastest flight time

9h 15m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from State of Washington in the past 72 hours is $413. The best round-trip flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is $976.
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 are 1,286 airports in United Kingdom. From State of Washington there are direct flights to London Heathrow (LHR).
Search flight deals

Frequently asked questions about flying from Washington to the United Kingdom

  • 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
Aer LingusPriceFrom $480Free CancellationRating
7.3
1,626 reviews
Search Aer Lingus flights
IcelandairPriceFrom $484Free CancellationRating
7.0
690 reviews
Search Icelandair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,768 reviews
Search American Airlines flights
Air FrancePriceFrom $517Free CancellationRating
7.5
1,614 reviews
Search Air France flights
British AirwaysPriceFrom $519Free CancellationRating
6.7
8,071 reviews
Search British Airways flights
DeltaPriceFrom $541Free CancellationRating
7.8
8,453 reviews
Search Delta flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,893 reviews
Search United Airlines flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,415 reviews
Search Finnair flights
Virgin AtlanticPriceFrom $565Free CancellationRating
7.5
690 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom $580Free CancellationRating
7.4
1,854 reviews
Search Scandinavian Airlines 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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