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Cheap flights from the United Kingdom to Washington from £255

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
4 Jan — 11 Jan1
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 5 December 2025.

Tue 9/1212:15LHR - SEA
1 stop12h 45mIcelandair
Thu 25/1214:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 3/12£471
Thu 11/1211:05LHR - SEA
1 stop17h 30mDelta
Tue 23/1216:48SEA - LHR
Nonstop9h 42mDelta
Deal found 3/12£473
Wed 24/1210:25LHR - SEA
1 stop16h 21mMultiple Airlines
Mon 5/120:00SEA - LHR
2 stops27h 10mMultiple Airlines
Deal found 3/12£483
Wed 24/1216:20LHR - SEA
1 stop36h 37mAustrian Airlines
Wed 7/108:10SEA - LHR
1 stop14h 30mAustrian Airlines
Deal found 4/12£493
Mon 8/1214:55LHR - SEA
Nonstop10h 00mBritish Airways
Thu 29/118:50SEA - LHR
Nonstop9h 30mBritish Airways
Deal found 3/12£510
Tue 9/1212:15LHR - SEA
1 stop12h 45mIcelandair
Wed 24/1214:35SEA - LHR
1 stop12h 15mIcelandair
Deal found 3/12£512
Thu 11/1213:00LHR - SEA
1 stop17h 25mDelta
Mon 22/1216:48SEA - LHR
Nonstop9h 42mDelta
Deal found 3/12£515
Tue 23/1220:35LHR - SEA
1 stop28h 25mIcelandair
Tue 6/114:35SEA - LHR
1 stop20h 55mIcelandair
Deal found 4/12£524
Fri 5/1214:55LHR - SEA
Nonstop10h 00mBritish Airways
Thu 29/118:50SEA - LHR
Nonstop9h 30mBritish Airways
Deal found 3/12£532
Thu 4/1212:35LHR - SEA
1 stop18h 50mIberia
Sat 31/110:50SEA - LHR
1 stop36h 00mIberia
Deal found 4/12£537
Wed 10/1210:45LHR - SEA
1 stop14h 09mDelta
Fri 26/1216:48SEA - LHR
Nonstop9h 42mDelta
Deal found 3/12£540
Wed 24/1206:05STN - SEA
2 stops18h 55mMultiple Airlines
Tue 6/114:35SEA - STN
2 stops22h 45mMultiple Airlines
Deal found 2/12£546

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 5 December 2025.

Round-trip from

£448

One-way from

£255

Popular in

July

Cheapest in

January

Average price

£640

Good round-trip deal

£529 or less

Good one-way deal

£445 or less
Icelandair
  • Icelandair
  • 7/4-20/4
  • 2 total stops
  • 24h 50m total
  • United Kingdom to Washington
Search Deals
2/3
  • 2/3
  • 2 total stops
  • 30h 03m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 5 December 2025.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

United Kingdom

Fly to

Washington

Route

Depart

Return

Price

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Tue 7/4

13:05-20:40

1 stop15h 35m

Seattle/Tacoma Intl

Tue 21/4

15:40-11:40

1 stop12h 00m

£450

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Wed 8/4

13:05-20:45

1 stop15h 40m

Seattle/Tacoma Intl

Wed 22/4

19:00-11:40

1 stop32h 40m

£465

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 6/2

07:30-18:26

2 stops18h 56m

Seattle/Tacoma Intl

Sat 14/2

07:00-09:10

2 stops18h 10m

£473

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 15/4

10:50-16:59

1 stop14h 09m

Seattle/Tacoma Intl

Mon 20/4

06:50-05:55

1 stop15h 05m

£480

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 6/4

06:30-12:20

1 stop13h 50m

Seattle/Tacoma Intl

Wed 15/4

07:00-08:20

1 stop17h 20m

£481

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 9/4

06:30-12:20

1 stop13h 50m

Seattle/Tacoma Intl

Mon 13/4

23:05-20:40

1 stop13h 35m

£481

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 22/1

14:50-10:22

2 stops27h 32m

Seattle/Tacoma Intl

Wed 4/2

15:10-12:50

1 stop13h 40m

£484

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 27/2

12:10-18:20

1 stop14h 10m

Seattle/Tacoma Intl

Sun 8/3

21:05-15:35

1 stop11h 30m

£485

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 15/1

09:15-22:43

2 stops21h 28m

Seattle/Tacoma Intl

Wed 28/1

10:58-12:55

2 stops41h 57m

£487

LondonSeattle

LCY - SEA

LCYSEA

London City

Fri 16/1

09:20-21:12

2 stops19h 52m

Seattle/Tacoma Intl

Thu 29/1

12:35-17:05

2 stops20h 30m

£487

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £306). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £462). 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 5 December 2025.

When flying from United Kingdom to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 10% versus a flight at midday.

What is the cheapest day to fly from United Kingdom to State of Washington?

Use this chart to determine the cheapest time to fly return from United Kingdom to Washington. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to State of Washington flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 5 December 2025.

The most flights from GB0 to USWA are scheduled on a Monday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 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 5 December 2025.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAir France 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
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,430 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air France
7.4
Good
1,500 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Icelandair
7.0
Good
584 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,562 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Overall

7.7

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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, United Airlines, and SWISS can get you from United Kingdom to State of Washington in just under 15h 35m. Your travel time can differ by up to 5h 53m. There are 4633 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?

    £253 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on British Airways and Icelandair, with prices starting from £346 and £348, 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, March is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £306). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £462). 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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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 5 December 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£327Average£606FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£387Average£716FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£399Average£567FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£402Average£590FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£403Average£637FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£408Average£649FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£425Average£648FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£444Average£642FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£444Average£663FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest£447Average£633FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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