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Cheap flights from Washington to the United Kingdom from £165

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 27/4. 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

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:00 - 00:25
SEA
-
EDI
21h 25m
2 stops
Multiple Airlines Logo
10:55 - 20:40
EDI
-
SEA
17h 45m
2 stops
£383Multiple Airlines
Sun, 19 Apr - Wed, 29 Apr
Multiple Airlines Logo
15:40 - 00:35
SEA
-
EDI
24h 55m
2 stops
Multiple Airlines Logo
15:10 - 17:55
EDI
-
SEA
34h 45m
2 stops
£437Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr
Multiple Airlines Logo
15:40 - 19:15
SEA
-
LGW
19h 35m
2 stops
Multiple Airlines Logo
20:45 - 17:55
LGW
-
SEA
29h 10m
3 stops
£455Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr
Scandinavian Airlines Logo
15:55 - 12:55
SEA
-
LHR
37h 00m
2 stops
Scandinavian Airlines Logo
06:40 - 13:45
LHR
-
SEA
15h 05m
1 stop
£463Scandinavian Airlines
Tue, 25 Aug - Fri, 28 Aug
Scandinavian Airlines Logo
15:55 - 12:55
SEA
-
LHR
37h 00m
2 stops
Scandinavian Airlines Logo
10:20 - 13:45
LHR
-
SEA
35h 25m
1 stop
£464Scandinavian Airlines
Tue, 25 Aug - Fri, 28 Aug
Icelandair Logo
15:30 - 11:55
PDX
-
LHR
12h 25m
1 stop
Icelandair Logo
21:25 - 18:00
LHR
-
PDX
28h 35m
1 stop
£522Icelandair
Mon, 27 Apr - Tue, 12 May
Icelandair Logo
15:30 - 14:40
PDX
-
LGW
15h 10m
1 stop
Icelandair Logo
15:40 - 18:00
LGW
-
PDX
34h 20m
1 stop
£522Icelandair
Mon, 13 Apr - Tue, 28 Apr
Lufthansa Logo
14:10 - 17:55
SEA
-
LCY
19h 45m
1 stop
Lufthansa Logo
09:15 - 18:30
LCY
-
SEA
17h 15m
2 stops
£602Lufthansa
Mon, 20 Apr - Thu, 7 May
KLM Logo
13:45 - 09:30
SEA
-
LCY
11h 45m
1 stop
KLM Logo
09:20 - 16:30
LCY
-
SEA
15h 10m
1 stop
£621KLM
Tue, 5 May - Tue, 12 May
Lufthansa Logo
14:10 - 17:55
SEA
-
LCY
19h 45m
1 stop
Lufthansa Logo
09:15 - 16:59
LCY
-
SEA
15h 44m
2 stops
£625Lufthansa
Wed, 22 Apr - Wed, 29 Apr

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
25 Aug
SEA15:55Seattle/Tacoma Intl
37h 00m
2 stops
LHR12:55London Heathrow
28 Aug
LHR06:40London Heathrow
15h 05m
1 stop
SEA13:45Seattle/Tacoma Intl
£463
Scandinavian Airlines
25 Aug
SEA15:55Seattle/Tacoma Intl
37h 00m
2 stops
LHR12:55London Heathrow
28 Aug
LHR10:20London Heathrow
35h 25m
1 stop
SEA13:45Seattle/Tacoma Intl
£464
Scandinavian Airlines
25 Aug
SEA15:55Seattle/Tacoma Intl
37h 00m
2 stops
LHR12:55London Heathrow
28 Aug
LHR07:05London Heathrow
14h 40m
2 stops
SEA13:45Seattle/Tacoma Intl
£466

Icelandair flights from State of Washington to United Kingdom

Our best Icelandair deals on State of Washington to United Kingdom flight tickets
Icelandair
20 Apr
SEA19:00Seattle/Tacoma Intl
17h 20m
1 stop
LHR20:20London Heathrow
27 Apr
LHR21:25London Heathrow
28h 30m
1 stop
SEA17:55Seattle/Tacoma Intl
£488
Icelandair
21 Apr
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
27 Apr
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
£518
Icelandair
13 Apr
SEA15:40Seattle/Tacoma Intl
12h 15m
1 stop
LHR11:55London Heathrow
25 Apr
LHR21:25London Heathrow
31h 15m
1 stop
SEA20:40Seattle/Tacoma Intl
£520

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 25 March 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 return flight

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Sun 19/4

19:00-00:25

2 stops21h 25m

Edinburgh Turnhouse

Wed 29/4

10:55-20:40

2 stops17h 45m

£383

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 20/4

15:40-00:35

2 stops24h 55m

Edinburgh Turnhouse

Mon 27/4

15:10-17:55

2 stops34h 45m

£437

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 20/4

15:40-19:15

2 stops19h 35m

London Gatwick

Mon 27/4

20:45-17:55

3 stops29h 10m

£455

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 25/8

15:55-12:55

2 stops37h 00m

London Heathrow

Fri 28/8

06:40-13:45

1 stop15h 05m

£463

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 25/8

15:55-12:55

2 stops37h 00m

London Heathrow

Fri 28/8

10:20-13:45

1 stop35h 25m

£464

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 27/4

15:30-11:55

1 stop12h 25m

London Heathrow

Tue 12/5

21:25-18:00

1 stop28h 35m

£522

PortlandLondon

PDX - LGW

PDXLGW

Portland

Mon 13/4

15:30-14:40

1 stop15h 10m

London Gatwick

Tue 28/4

15:40-18:00

1 stop34h 20m

£522

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 20/4

14:10-17:55

1 stop19h 45m

London City

Thu 7/5

09:15-18:30

2 stops17h 15m

£602
Fastest return journey

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 5/5

13:45-09:30

1 stop11h 45m

London City

Tue 12/5

09:20-16:30

1 stop15h 10m

£621

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 22/4

14:10-17:55

1 stop19h 45m

London City

Wed 29/4

09:15-16:59

2 stops15h 44m

£625

Flights are sorted by cheapest return 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?

The cheapest month to fly to United Kingdom from State of Washington is in October. Flight prices, which tend to average around £478, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around £478.

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. Travellers who choose to depart for United Kingdom on a Tuesday will often find tickets for as low as £495. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to United Kingdom for around £655.

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

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £546. Try not to purchase tickets in the afternoon because they tend to be around £613. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £580 when searching weeks before you fly. 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 £528 on momondo.

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

There are 3 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 24% 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

£395

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 £395. The best return flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is £654.
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

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

    Prices for flights from Washington to United Kingdom are refreshed on a daily basis.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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
British AirwaysPriceFrom £354Free CancellationRating
6.7
7,819 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £369Free CancellationRating
7.5
685 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £411Free CancellationRating
7.0
625 reviews
Search Icelandair flights
Aer LingusPriceFrom £502Free CancellationRating
7.2
1,487 reviews
Search Aer Lingus flights

Why use momondo?

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

It is quick and easy to find Washington to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

All flight searches from Washington to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to United Kingdom from Washington.

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

Of course. momondo tracks the price of Washington to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

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