Cheap flights from the United Kingdom to Washington from £389
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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap 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 July 2025.
Find flight deals from United Kingdom to Washington
Cheapest flights from United Kingdom to WashingtonExplore 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 July 2025.
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 July 2025.
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 July 2025.
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
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Tue 11/11
07:40-19:16
2 stops19h 36m
Seattle/Tacoma Intl
Mon 17/11
05:50-07:10
2 stops17h 20m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Thu 28/8
10:45-23:59
2 stops21h 14m
Seattle/Tacoma Intl
Sun 14/9
19:00-14:40
1 stop11h 40m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Wed 29/10
18:40-23:15
2 stops35h 35m
Seattle/Tacoma Intl
Mon 3/11
13:20-17:50
2 stops20h 30m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Mon 10/11
06:30-12:10
1 stop13h 40m
Seattle/Tacoma Intl
Mon 17/11
09:25-10:50
2 stops17h 25m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 11/9
08:40-18:36
2 stops17h 56m
Seattle/Tacoma Intl
Thu 18/9
12:00-10:00
1 stop14h 00m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Thu 2/10
15:40-20:40
1 stop13h 00m
Seattle/Tacoma Intl
Sat 11/10
19:00-14:40
1 stop11h 40m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Mon 10/11
17:10-23:15
2 stops38h 05m
Seattle/Tacoma Intl
Mon 17/11
14:30-19:15
2 stops20h 45m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Tue 4/11
12:15-17:00
1 stop12h 45m
Seattle/Tacoma Intl
Mon 10/11
14:35-10:50
1 stop12h 15m
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sat 13/9
14:10-09:21
1 stop27h 11m
Seattle/Tacoma Intl
Sat 27/9
06:30-08:20
2 stops17h 50m
LondonSeattle
LTN - SEA
LTNSEA
London Luton
Thu 28/8
12:35-13:50
2 stops33h 15m
Seattle/Tacoma Intl
Sun 31/8
16:00-21:30
2 stops21h 30m
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.
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, January is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £622). Flying from United Kingdom to State of Washington in July is currently the most expensive (average of £946). 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 July 2025.
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 July 2025.
The most flights from GB0 to USWA are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 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 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andFinnair 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.
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
Kim,May 2025
PIH - SLC
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.
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.
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 July 2025.
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!