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Cheap flights from Washington to the United Kingdom from $285

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 8/2. 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
0 bags

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Find the cheapest flights from Washington to the United Kingdom

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:40 pm - 3:20 pm
SEA
-
EDI
15h 40m
2 stops
Multiple Airlines Logo
1:05 pm - 11:45 am
EDI
-
SEA
30h 40m
2 stops
$737Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
3:40 pm - 12:35 am
SEA
-
EDI
24h 55m
2 stops
Multiple Airlines Logo
7:55 am - 6:45 pm
EDI
-
SEA
42h 50m
3 stops
$792Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Scandinavian Airlines Logo
3:55 pm - 6:25 pm
SEA
-
EDI
18h 30m
1 stop
Scandinavian Airlines Logo
7:10 pm - 1:45 pm
EDI
-
SEA
26h 35m
1 stop
$793Scandinavian Airlines
Tue, Sep 8 - Thu, Sep 17
Scandinavian Airlines Logo
3:55 pm - 9:35 pm
SEA
-
LHR
21h 40m
2 stops
Scandinavian Airlines Logo
3:35 pm - 1:45 pm
LHR
-
SEA
30h 10m
2 stops
$796Scandinavian Airlines
Sun, Sep 6 - Sat, Sep 19
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 5:55 pm
LGW
-
SEA
34h 15m
1 stop
$796Icelandair
Wed, Sep 30 - Mon, Oct 5
Condor Logo
6:35 pm - 6:50 pm
SEA
-
LGW
17h 15m
1 stop
Condor Logo
9:55 am - 4:35 pm
LGW
-
SEA
13h 40m
1 stop
$801Condor
Sat, Oct 24 - Sat, Oct 31
SWISS Logo
10:47 am - 4:25 pm
SEA
-
LHR
21h 38m
2 stops
SWISS Logo
6:00 am - 11:24 pm
LHR
-
SEA
25h 24m
2 stops
$802SWISS
Tue, Aug 25 - Thu, Aug 27
Condor Logo
6:10 pm - 6:50 pm
SEA
-
LGW
16h 40m
1 stop
Condor Logo
10:20 am - 4:00 pm
LGW
-
SEA
13h 40m
1 stop
$805Condor
Mon, May 18 - Fri, Jun 5
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 5:55 pm
LGW
-
SEA
34h 15m
1 stop
$806Icelandair
Thu, Sep 10 - Wed, Sep 30
SWISS Logo
10:47 am - 5:25 pm
SEA
-
LCY
22h 38m
2 stops
SWISS Logo
9:15 am - 11:24 pm
LCY
-
SEA
22h 09m
2 stops
$834SWISS
Tue, Aug 25 - Thu, Aug 27

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Icelandair flights from State of Washington to United Kingdom

Our best Icelandair deals on State of Washington to United Kingdom flight tickets
Icelandair
Sep 30
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
Oct 5
LGW3:40 pmLondon Gatwick
34h 15m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$796
Icelandair
Sep 10
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
Sep 30
LGW3:40 pmLondon Gatwick
34h 15m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$806
Icelandair
Sep 10
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
LHR11:55 amLondon Heathrow
Oct 20
LHR9:25 pmLondon Heathrow
28h 30m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$807

Lufthansa flights from State of Washington to United Kingdom

Our best Lufthansa deals on State of Washington to United Kingdom flight tickets
Lufthansa
Aug 17
SEA1:56 pmSeattle/Tacoma Intl
19h 44m
2 stops
LHR5:40 pmLondon Heathrow
Aug 19
LHR3:05 pmLondon Heathrow
15h 43m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
$818
Lufthansa
May 13
SEA2:55 pmSeattle/Tacoma Intl
19h 30m
2 stops
LHR6:25 pmLondon Heathrow
May 15
LHR6:55 amLondon Heathrow
18h 04m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$930
Lufthansa
May 13
SEA2:55 pmSeattle/Tacoma Intl
16h 45m
2 stops
LHR3:40 pmLondon Heathrow
May 15
LHR8:30 amLondon Heathrow
18h 00m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$940

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 May 6, 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

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Tue 6/2

3:40 pm-3:20 pm

2 stops15h 40m

Edinburgh Turnhouse

Tue 6/9

1:05 pm-11:45 am

2 stops30h 40m

$737

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 6/1

3:40 pm-12:35 am

2 stops24h 55m

Edinburgh Turnhouse

Mon 6/8

7:55 am-6:45 pm

3 stops42h 50m

$792

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Tue 9/8

3:55 pm-6:25 pm

1 stop18h 30m

Edinburgh Turnhouse

Thu 9/17

7:10 pm-1:45 pm

1 stop26h 35m

$793

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 9/6

3:55 pm-9:35 pm

2 stops21h 40m

London Heathrow

Sat 9/19

3:35 pm-1:45 pm

2 stops30h 10m

$796

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 9/30

7:00 pm-2:40 pm

1 stop11h 40m

London Gatwick

Mon 10/5

3:40 pm-5:55 pm

1 stop34h 15m

$796

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 10/24

6:35 pm-6:50 pm

1 stop17h 15m

London Gatwick

Sat 10/31

9:55 am-4:35 pm

1 stop13h 40m

$801

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 8/25

10:47 am-4:25 pm

2 stops21h 38m

London Heathrow

Thu 8/27

6:00 am-11:24 pm

2 stops25h 24m

$802
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 5/18

6:10 pm-6:50 pm

1 stop16h 40m

London Gatwick

Fri 6/5

10:20 am-4:00 pm

1 stop13h 40m

$805

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 9/10

7:00 pm-2:40 pm

1 stop11h 40m

London Gatwick

Wed 9/30

3:40 pm-5:55 pm

1 stop34h 15m

$806

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 8/25

10:47 am-5:25 pm

2 stops22h 38m

London City

Thu 8/27

9:15 am-11:24 pm

2 stops22h 09m

$834

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 $690.

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 $796. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $889.

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 $815. 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 afternoon, with an average ticket price of $864. Departure times in the afternoon 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 $815 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 $706 on momondo.

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

You could potentially save up to 50% 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

$524

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 $524. The best round-trip flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is $991.
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
JetBluePriceFrom $145Free CancellationRating
7.1
2,980 reviews
Search JetBlue flights
Aer LingusPriceFrom $481Free CancellationRating
7.3
1,546 reviews
Search Aer Lingus flights
IcelandairPriceFrom $483Free CancellationRating
7.0
650 reviews
Search Icelandair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,669 reviews
Search American Airlines flights
British AirwaysPriceFrom $526Free CancellationRating
6.7
7,949 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $532Free CancellationRating
7.4
1,770 reviews
Search Scandinavian Airlines flights
Air FrancePriceFrom $532Free CancellationRating
7.4
1,586 reviews
Search Air France flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,690 reviews
Search United Airlines flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,462 reviews
Search Delta flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,392 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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