Cheap flights from London Heathrow Airport to Washington from £387
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheap flight deals from Heathrow to Washington
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Cheapest flights from Heathrow to Washington
Explore the most affordable flight options available from Heathrow to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.
Tue 10/1106:20 -
1 stop15h 30m
Wed 25/1115:25 -
1 stop14h 20m
Deal found 28/10£404
Fri 13/1106:35 -
1 stop14h 25m
Sun 29/1114:50 -
1 stop17h 00m
Deal found 29/10£405
Mon 14/1212:20 -
Nonstop10h 30m
Sat 9/107:20 -
1 stop15h 30m
Deal found 29/10£406
Mon 14/1212:20 -
Nonstop10h 30m
Fri 8/116:55 -
Nonstop9h 45m
Deal found 28/10£407
Thu 10/1212:20 -
Nonstop10h 30m
Mon 18/116:55 -
Nonstop9h 45m
Deal found 30/10£407
Tue 17/1114:30 -
1 stop32h 07m
Tue 24/1115:15 -
1 stop12h 35m
Deal found 27/10£408
Thu 10/1208:40 -
1 stop35h 10m
Wed 6/106:00 -
1 stop17h 05m
Deal found 28/10£409
Sat 12/1209:50 -
1 stop15h 40m
Thu 7/107:20 -
1 stop15h 30m
Deal found 29/10£410
Sat 12/1209:50 -
1 stop15h 40m
Mon 18/116:55 -
Nonstop9h 45m
Deal found 30/10£411
Mon 16/1111:20 -
1 stop15h 17m
Sat 21/1123:07 -
1 stop26h 48m
Deal found 27/10£412
Wed 16/1206:30 -
2 stops18h 40m
Sat 9/111:00 -
1 stop15h 00m
Deal found 29/10£413
Thu 10/1214:45 -
1 stop14h 20m
Thu 24/1213:29 -
1 stop14h 51m
Deal found 29/10£622
Best flights from Heathrow to Washington
Discover carefully curated flight deals from Heathrow to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Fri 13/1112:20 -
Nonstop10h 30m
Thu 3/1216:50 -
Nonstop9h 50m
Deal found 29/10£406
Fri 27/1106:30 -
1 stop13h 17m
Fri 4/1208:30 -
1 stop19h 10m
Deal found 30/10£410
Thu 5/1109:25 -
Nonstop10h 00m
Sat 21/1118:45 -
Nonstop9h 25m
Deal found 25/10£425
Tue 22/1207:40 -
1 stop16h 39m
Mon 4/107:00 -
2 stops19h 25m
Deal found 28/10£496
Thu 21/114:45 -
1 stop17h 05m
Sun 24/113:59 -
1 stop14h 21m
Deal found 28/10£510
Thu 5/1112:20 -
Nonstop10h 30m
Thu 19/1108:30 -
1 stop14h 35m
Deal found 27/10£407
Thu 5/1106:30 -
1 stop13h 17m
Sat 21/1123:47 -
1 stop23h 18m
Deal found 25/10£415
Mon 14/1211:00 -
1 stop17h 31m
Sat 23/110:00 -
1 stop14h 15m
Deal found 29/10£427
Tue 1/1206:20 -
1 stop15h 30m
Wed 2/607:20 -
1 stop15h 25m
Deal found 29/10£418
Fri 15/106:30 -
1 stop13h 19m
Fri 22/116:55 -
Nonstop9h 45m
Deal found 30/10£419
Thu 21/114:45 -
1 stop31h 47m
Mon 25/106:08 -
1 stop22h 12m
Deal found 28/10£510
Mon 14/1213:35 -
1 stop17h 23m
Mon 21/1219:20 -
2 stops30h 00m
Deal found 30/10£1,061
Mon 28/1207:50 -
1 stop19h 16m
Sat 9/105:00 -
2 stops17h 40m
Deal found 27/10£562
Wed 16/1209:40 -
1 stop21h 15m
Fri 8/107:31 -
1 stop14h 49m
Deal found 25/10£429
Mon 14/1212:20 -
Nonstop10h 30m
Mon 21/1208:25 -
1 stop14h 40m
Deal found 30/10£572
Thu 21/115:20 -
2 stops28h 06m
Mon 25/112:40 -
1 stop13h 00m
Deal found 28/10£722
Thu 14/114:45 -
1 stop14h 08m
Mon 18/109:00 -
1 stop19h 20m
Deal found 26/10£725
Mon 14/1214:45 -
2 stops15h 54m
Mon 28/1206:05 -
1 stop22h 15m
Deal found 28/10£742
Wed 16/1212:05 -
2 stops17h 57m
Wed 13/112:23 -
2 stops37h 17m
Deal found 30/10£744
Fri 11/1215:20 -
2 stops27h 56m
Mon 28/1205:00 -
2 stops16h 55m
Deal found 26/10£776
Mon 14/1214:45 -
2 stops15h 54m
Wed 30/1206:05 -
1 stop22h 15m
Deal found 26/10£784
Fri 11/1214:45 -
2 stops15h 54m
Wed 30/1211:03 -
1 stop17h 17m
Deal found 26/10£784
Thu 14/116:20 -
2 stops27h 18m
Mon 18/109:15 -
2 stops14h 40m
Deal found 27/10£785
Sat 12/1209:25 -
1 stop22h 03m
Sat 19/1216:04 -
2 stops30h 46m
Deal found 28/10£1,166
Fri 11/1213:10 -
2 stops18h 43m
Fri 18/1213:59 -
2 stops40h 51m
Deal found 26/10£1,197
Thu 10/1211:55 -
2 stops19h 33m
Thu 17/1206:15 -
2 stops19h 25m
Deal found 26/10£1,237
Sat 12/1214:45 -
1 stop16h 53m
Sun 17/113:59 -
1 stop14h 21m
Deal found 28/10£1,082
Thu 10/1214:45 -
1 stop16h 43m
Thu 17/1206:15 -
1 stop22h 05m
Deal found 26/10£1,098
Sat 12/1214:45 -
1 stop30h 30m
Sat 19/1216:04 -
1 stop12h 16m
Deal found 28/10£1,578
Direct flights from Heathrow to Washington
Explore direct flight options from Heathrow to Washington based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.
Sat 5/1214:55 -
Nonstop9h 55m
Thu 10/1213:40 -
Nonstop9h 30m
Deal found 28/10£405
Mon 14/1212:20 -
Nonstop10h 30m
Sat 9/116:55 -
Nonstop9h 45m
Deal found 29/10£406
Mon 14/1212:20 -
Nonstop10h 30m
Fri 8/116:55 -
Nonstop9h 45m
Deal found 28/10£407
Thu 10/1212:20 -
Nonstop10h 30m
Mon 18/116:55 -
Nonstop9h 45m
Deal found 30/10£407
Thu 26/1112:20 -
Nonstop10h 30m
Wed 5/521:50 -
Nonstop9h 45m
Deal found 26/10£408
Sat 23/109:25 -
Nonstop10h 00m
Sat 20/213:40 -
Nonstop9h 30m
Deal found 30/10£409
Sat 5/1214:55 -
Nonstop9h 55m
Wed 9/1218:45 -
Nonstop9h 25m
Deal found 27/10£412
Thu 10/1212:20 -
Nonstop10h 30m
Sat 16/116:55 -
Nonstop9h 45m
Deal found 29/10£414
Thu 10/1212:20 -
Nonstop10h 30m
Mon 18/116:55 -
Nonstop9h 45m
Deal found 29/10£415
Sat 16/112:20 -
Nonstop10h 25m
Mon 18/116:55 -
Nonstop9h 45m
Deal found 29/10£416
Sun 10/112:20 -
Nonstop10h 25m
Tue 19/116:55 -
Nonstop9h 45m
Deal found 28/10£417
Mon 14/1212:20 -
Nonstop10h 30m
Thu 7/116:55 -
Nonstop9h 45m
Deal found 28/10£418
Last-minute flights from Heathrow to Washington
Discover last-minute flight deals from Heathrow to Washington. Data last updated 30 October 2026 and is based on user searches.
Mon 2/1112:20 -
Nonstop10h 30m
Sun 8/1111:08 -
1 stop14h 47m
Deal found 26/10£407
Thu 5/1112:35 -
1 stop15h 45m
Sat 21/1118:45 -
Nonstop9h 25m
Deal found 26/10£411
Tue 10/1106:20 -
1 stop15h 30m
Wed 25/1115:25 -
1 stop14h 20m
Deal found 28/10£404
Tue 10/1108:45 -
2 stops17h 37m
Mon 30/1110:10 -
1 stop17h 40m
Deal found 30/10£413
Fri 13/1106:35 -
1 stop14h 25m
Sun 29/1114:50 -
1 stop17h 00m
Deal found 29/10£405
Mon 16/1111:20 -
1 stop15h 17m
Sat 21/1123:07 -
1 stop26h 48m
Deal found 27/10£412
Tue 17/1114:30 -
1 stop32h 07m
Tue 24/1115:15 -
1 stop12h 35m
Deal found 27/10£408
Thu 19/1112:20 -
Nonstop10h 30m
Thu 3/1216:50 -
Nonstop9h 50m
Deal found 30/10£406
Thu 19/1106:30 -
1 stop13h 17m
Thu 3/1206:00 -
1 stop17h 50m
Deal found 29/10£409
Sat 21/1114:45 -
1 stop17h 09m
Sat 28/1106:06 -
1 stop22h 14m
Deal found 27/10£731
Sun 22/1114:45 -
1 stop14h 19m
Sat 5/1212:37 -
1 stop15h 43m
Deal found 25/10£730
Wed 25/1112:20 -
Nonstop10h 30m
Wed 10/317:00 -
Nonstop9h 40m
Deal found 27/10£407
One-way flights from Heathrow to Washington
Search for one-way flight options from Heathrow to Washington. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Tue 8/1215:15 -
3 stops50h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£387
Mon 18/106:35 -
2 stops35h 14m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/10£388
Fri 6/1120:45 -
3 stops28h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£389
Wed 11/1120:35 -
1 stop28h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£390
Mon 11/114:45 -
Nonstop10h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£390
Thu 26/1106:40 -
2 stops18h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£391
Mon 14/1209:55 -
3 stops39h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£392
Wed 16/1209:40 -
1 stop21h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£393
Fri 4/1207:05 -
2 stops17h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£393
Wed 25/1108:50 -
3 stops40h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£394
Wed 9/1206:00 -
2 stops22h 59m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£396
Sun 6/1212:05 -
2 stops55h 23m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10£513
Find flight deals from Heathrow to Washington
Keep the following information in mind while searching for Heathrow to Washington flight deals. Data was last updated 30 October 2026.
Customise your flight search to find flights from Heathrow 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 7,457,451 searches. Data last updated 30 October 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Wed 16/12
09:50-17:10
1 stop15h 20m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£396
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Tue 8/12
07:40-23:44
3 stops24h 04m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£404
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Fri 13/11
12:20-14:50
Nonstop10h 30m
Seattle/Tacoma Intl
Thu 3/12
16:50-10:40
Nonstop9h 50m
£406
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Thu 5/11
12:20-14:50
Nonstop10h 30m
Seattle/Tacoma Intl
Thu 19/11
08:30-07:05
1 stop14h 35m
£407
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Fri 27/11
06:30-11:47
1 stop13h 17m
Seattle/Tacoma Intl
Fri 4/12
08:30-11:40
1 stop19h 10m
£410
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Tue 5/1
18:00-13:13
2 stops27h 13m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£415
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Thu 5/11
06:30-11:47
1 stop13h 17m
Seattle/Tacoma Intl
Sat 21/11
23:47-07:05
1 stop23h 18m
£415
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Tue 1/12
06:20-13:50
1 stop15h 30m
Seattle/Tacoma Intl
Wed 2/6
07:20-06:45
1 stop15h 25m
£418
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Fri 15/1
06:30-11:49
1 stop13h 19m
Seattle/Tacoma Intl
Fri 22/1
16:55-10:40
Nonstop9h 45m
£419
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Thu 5/11
09:25-11:25
Nonstop10h 00m
Seattle/Tacoma Intl
Sat 21/11
18:45-12:10
Nonstop9h 25m
£425
Flights are sorted by cheapest return flights first.
Deals found on 27/10
Showing 1-10 of 45 resultsSorted by cheapest first
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2
3
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5
Best time to book a flight from Heathrow to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Heathrow with our price prediction graph.
LHR-SEA
LHR-GEG
LHR-BLI
LHR-PSC
LHR-YKM
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 London Heathrow Airport to Washington
LHR-USWA
LHR-SEA
LHR-GEG
LHR-BLI
LHR-PSC
What is the cheapest month to book a flight from London Heathrow Airport to State of Washington?
Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to State of Washington (average of £478). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £669). 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 LHR to WA?
Find hourly flight availability from Heathrow 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 30 October 2026.
When flying from London Heathrow Airport 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.
How much does it cost for a return flight from London Heathrow Airport to State of Washington?
Airfare is below average for this route at the moment.
London Heathrow Airport to State of Washington flights typically cost between £435 and £624 in April.The cheapest return price found within the last 5 days was £404 on British Airways (12 Apr–21 Apr).
How far ahead should I book a flight from London Heathrow Airport to State of Washington?
The price you pay for your flight from London Heathrow Airport to State of Washington may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 30 October 2026.
Get a feel of what it's like to fly with Alaska Airlines,KLM, andVirgin Atlantic from London Heathrow Airport 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.
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.
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.
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.
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.
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.
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 Heathrow 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 London Heathrow Airport to State of Washington?
KLM, Delta, and Alaska Airlines can get you from London Heathrow Airport to State of Washington in just under 10h 30m. Your travel time can differ by up to 6h 35m. The distance from London Heathrow Airport to State of Washington is about 4783 mi. This flight may include one or multiple stops.
What are the most popular routes from London Heathrow Airport to State of Washington?
When deciding which route to take from London Heathrow Airport to State of Washington consider London Heathrow - Seattle/Tacoma Intl, London Heathrow - Portland or London Heathrow - Spokane as they are the most popular.
What are the most reliable airlines from London Heathrow Airport to State of Washington?
The top 3 most reliable airlines when flying from London Heathrow Airport to State of Washington are Scandinavian Airlines (87%), KLM (84%) and SAUDIA (84%).
What are the cheapest flights from London Heathrow Airport to State of Washington?
Looking for the cheapest flight from London Heathrow Airport to State of Washington? While on average our users pay £1,875, our data indicates the cheapest price to be £346. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £321.
Can I find deals for business class flights from Heathrow to Washington?
Yes. Cheapflights offers flight deals from Heathrow 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 London Heathrow Airport to State of Washington?
Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to State of Washington (average of £478). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £669). 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.
Top 10 airlines flying from Heathrow to Washington
Discover the top 10 airlines that operate flights from Heathrow 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 7,457,451 searches. Data last updated 30 October 2026.
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 Heathrow to Washington?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington from Heathrow today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Washington?
Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Washington for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Heathrow to Washington with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Washington flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Heathrow to Washington become cheaper?
Not ready to book yet? You can track prices for flights from Heathrow to Washington on Cheapflights with our Price Alert feature and get notified when better prices are available.
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