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Cheap flights from the United Kingdom to Washington from £293

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
26 Aug — 2 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Washington

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Washington
Explore the most affordable flight options available from United Kingdom to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 July 2026.

Mon 19/1021:25
LHR
-
SEA
1 stop31h 15m
Icelandair
Tue 27/1015:35
SEA
-
LHR
1 stop20h 55m
Icelandair
Deal found 26/7£452
Mon 24/821:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Mon 7/915:40
SEA
-
LHR
1 stop20h 40m
Icelandair
Deal found 23/7£454
Sat 3/1010:35
LHR
-
SEA
1 stop18h 26m
United Airlines
Sat 3/1023:14
SEA
-
LHR
1 stop23h 41m
United Airlines
Deal found 27/7£455
Tue 8/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Tue 15/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 25/7£455
Mon 23/1113:45
LHR
-
SEA
1 stop15h 02m
United Airlines
Mon 23/1123:15
SEA
-
LHR
1 stop23h 05m
United Airlines
Deal found 24/7£455
Mon 21/908:00
LHR
-
SEA
2 stops20h 43m
United Airlines
Mon 21/922:58
SEA
-
LHR
1 stop22h 57m
United Airlines
Deal found 23/7£456
Wed 11/1112:15
LHR
-
SEA
1 stop12h 45m
Multiple Airlines
Wed 25/1108:31
SEA
-
LHR
2 stops15h 34m
Multiple Airlines
Deal found 23/7£457
Fri 23/1009:30
LHR
-
SEA
2 stops20h 29m
United Airlines
Sat 24/1008:30
SEA
-
LHR
2 stops17h 40m
United Airlines
Deal found 23/7£458
Tue 25/815:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Mon 7/915:40
SEA
-
LGW
1 stop12h 05m
Icelandair
Deal found 25/7£458
Thu 24/916:55
STN
-
SEA
2 stops28h 50m
Multiple Airlines
Fri 2/1015:55
SEA
-
STN
2 stops20h 35m
Multiple Airlines
Deal found 26/7£458
Tue 1/913:00
LGW
-
SEA
1 stop15h 40m
Icelandair
Wed 30/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 26/7£459
Tue 8/910:45
STN
-
SEA
2 stops33h 00m
Multiple Airlines
Tue 15/919:00
SEA
-
STN
2 stops21h 10m
Multiple Airlines
Deal found 25/7£460

Find flight deals from United Kingdom to Washington

Keep the following information in mind while searching for United Kingdom to Washington flight deals. Data was last updated 27 July 2026.

Round-trip from

£452

One-way from

£293

Popular in

December

Cheapest in

February

Average price

£625

Good round-trip deal

£524 or less

Good one-way deal

£272 or less
Icelandair
  • Icelandair
  • 19/10-27/10
  • 2 total stops
  • 52h 10m total
  • United Kingdom to Washington
Search Deals
JetBlue
  • JetBlue
  • 3/9
  • 1 total stop
  • 18h 29m total
  • United Kingdom to Washington
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington.
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Washington 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, Cheapflights users made 858,174 searches. Data last updated 27 July 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 7/12

09:30-20:48

2 stops19h 18m

Seattle/Tacoma Intl

Fri 11/12

06:57-09:40

2 stops18h 43m

£536

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 24/8

06:55-17:42

2 stops18h 47m

Seattle/Tacoma Intl

Wed 2/9

22:58-20:40

1 stop13h 42m

£536

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 19/9

08:00-20:43

2 stops20h 43m

Seattle/Tacoma Intl

Sat 19/9

22:58-21:20

1 stop14h 22m

£540

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 29/8

08:00-20:43

2 stops20h 43m

Seattle/Tacoma Intl

Sat 29/8

23:04-06:55

1 stop23h 51m

£540

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 21/12

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Fri 1/1

16:45-10:30

Nonstop9h 45m

£544

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 23/11

08:40-11:47

1 stop35h 07m

Seattle/Tacoma Intl

Wed 20/1

16:55-10:40

Nonstop9h 45m

£545

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 27/10

12:20-15:54

Nonstop10h 34m

Seattle/Tacoma Intl

Sun 8/11

16:50-10:40

Nonstop9h 50m

£545

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 4/9

11:45-16:35

1 stop12h 50m

Seattle/Tacoma Intl

Sat 19/9

21:50-15:35

Nonstop9h 45m

£547

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 26/9

10:25-17:48

1 stop15h 23m

Seattle/Tacoma Intl

Thu 22/10

13:30-09:25

1 stop11h 55m

£551

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 13/11

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Sat 28/11

18:55-12:20

Nonstop9h 25m

£551

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from United Kingdom to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Washington

What is the cheapest month to book a flight from United Kingdom to State of Washington?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £515). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to WA?

Find hourly flight availability from United Kingdom to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 July 2026.

When flying from United Kingdom to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to State of Washington

Explore weekly flight availability from United Kingdom to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 27 July 2026.

The most flights from GB0 to USWA are scheduled on a Friday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (23 on average).

How far ahead should I book a flight from United Kingdom to State of Washington?

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated 27 July 2026.
Get a feel of what it's like to fly with Alaska Airlines,KLM, andVirgin Atlantic from the United Kingdom to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,717 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
KLM
7.8
Good
1,550 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Virgin Atlantic
7.5
Good
695 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Icelandair
7.0
Good
716 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
British Airways
6.7
Okay
8,130 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to State of Washington?

    United Airlines, Virgin Atlantic, and Delta can get you from United Kingdom to State of Washington in just under 15h 07m. Your travel time can differ by up to 4h 11m. There are 4794 mi between United Kingdom and State of Washington. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to State of Washington one-way?

    £318 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Icelandair and Virgin Atlantic, with prices starting from £355 and £369, respectively.

  • Can I find deals for flights from United Kingdom to Washington that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Washington.

  • Can I find deals for business class flights from United Kingdom to Washington?

    Yes. Cheapflights offers flight deals from United Kingdom to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to State of Washington?

    Currently, February is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £515). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from United Kingdom to Washington

Discover the top 10 airlines that operate flights from United Kingdom to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£272Average£743FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£337Average£565FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£343Average£556FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£365Average£643FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£394Average£709FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£433Average£677FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£439Average£787FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest£444Average£649FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest£453Average£719FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£464Average£689FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

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How does Cheapflights help users find flights from United Kingdom to Washington?

Cheapflights helps you search for flights from United Kingdom to Washington via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Washington?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Washington.

Can Cheapflights find flights from United Kingdom to Washington with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from United Kingdom to Washington flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from United Kingdom to Washington become cheaper?

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