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Cheap flights from the United Kingdom to Washington from £300

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
3 Jun — 10 Jun1
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 4 May 2026.

Tue 16/609:25
MAN
-
SEA
1 stop15h 45m
Multiple Airlines
Tue 23/619:10
SEA
-
MAN
1 stop14h 15m
Multiple Airlines
Deal found 2/5£512
Tue 16/615:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Tue 7/719:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/5£518
Thu 18/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Wed 24/623:25
SEA
-
LHR
1 stop12h 55m
Icelandair
Deal found 4/5£519
Fri 19/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Wed 24/623:25
SEA
-
LHR
1 stop12h 55m
Icelandair
Deal found 4/5£520
Mon 22/615:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Mon 6/719:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/5£521
Fri 26/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Sat 4/723:25
SEA
-
LHR
1 stop12h 55m
Icelandair
Deal found 4/5£521
Sat 20/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Thu 9/723:25
SEA
-
LHR
1 stop12h 55m
Icelandair
Deal found 4/5£521
Fri 26/615:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Tue 7/719:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/5£522
Wed 27/506:30
STN
-
SEA
1 stop18h 40m
Multiple Airlines
Wed 3/619:10
SEA
-
STN
1 stop20h 10m
Multiple Airlines
Deal found 29/4£522
Sat 6/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Wed 24/623:25
SEA
-
LHR
1 stop12h 55m
Icelandair
Deal found 2/5£522
Thu 28/515:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Mon 1/619:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/5£523
Wed 10/621:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Fri 10/723:25
SEA
-
LHR
1 stop28h 30m
Icelandair
Deal found 4/5£523

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 4 May 2026.

Round-trip from

£512

One-way from

£300

Popular in

July

Cheapest in

February

Average price

£535

Good round-trip deal

£566 or less

Good one-way deal

£532 or less
16/6-23/6
  • 16/6-23/6
  • 2 total stops
  • 30h 00m total
  • United Kingdom to Washington
Search Deals
15/5
  • 15/5
  • 3 total stops
  • 49h 20m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 4 May 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

LGW - SEA

LGWSEA

London Gatwick

Sat 19/9

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sun 4/10

19:00-14:40

1 stop11h 40m

£551

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 19/9

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sat 3/10

19:00-14:40

1 stop11h 40m

£551

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 28/5

19:30-13:45

1 stop26h 15m

Seattle/Tacoma Intl

Sat 6/6

15:55-18:50

2 stops18h 55m

£578

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 26/9

08:40-16:35

1 stop15h 55m

Seattle/Tacoma Intl

Thu 22/10

21:50-15:35

Nonstop9h 45m

£592

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 7/6

15:40-11:45

1 stop28h 05m

Seattle/Tacoma Intl

Tue 23/6

23:25-14:40

1 stop31h 15m

£597

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 27/5

17:00-10:05

2 stops25h 05m

Seattle/Tacoma Intl

Wed 3/6

13:30-16:00

1 stop18h 30m

£607

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Wed 2/9

21:10-13:45

2 stops48h 35m

Seattle/Tacoma Intl

Sun 6/9

15:55-19:45

2 stops19h 50m

£617

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 16/7

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Fri 31/7

21:50-15:35

Nonstop9h 45m

£622

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 18/6

06:30-11:37

1 stop13h 07m

Seattle/Tacoma Intl

Thu 2/7

23:15-06:45

1 stop23h 30m

£626
Fastest return journey

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 30/6

17:45-20:01

Nonstop10h 16m

Seattle/Tacoma Intl

Thu 30/7

21:50-15:35

Nonstop9h 45m

£628

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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

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.

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 £287). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £846). 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 4 May 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 4 May 2026.

The most flights from GB0 to USWA are scheduled on a Monday (21 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (21 on average).

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 4 May 2026.
Get a feel of what it's like to fly with KLM,Air France, 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.
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,511 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Air France
7.4
Good
1,583 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.4
Good
688 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
650 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
7,943 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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?

    Icelandair, Scandinavian Airlines, and KLM can get you from United Kingdom to State of Washington in just under 13h. Your travel time can differ by up to 13h 15m. There are 4807 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?

    £340 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 Virgin Atlantic and Icelandair, with prices starting from £342 and £349, 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 £287). Flying from United Kingdom to State of Washington in December is currently the most expensive (average of £846). 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

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Alternative routes for United Kingdom to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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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 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£330Average£585FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£337Average£533FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£358Average£586FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£369Average£647FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£412Average£743FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£421Average£658FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£445Average£752FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£454Average£670FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£456Average£662FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£458Average£492FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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