How long is the flight from London Heathrow Airport to State of Washington?

KLM, Alaska Airlines, and Icelandair can get you from London Heathrow Airport to State of Washington in just under 10h 15m. Your travel time can differ by up to 18h 10m. The distance from London Heathrow Airport to State of Washington is about 4783 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in State of Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 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 £1,757, our data indicates the cheapest price to be £350. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £339.

Can I find deals for flights from Heathrow to Washington that include hotel bookings?

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

How can I find direct flights from Heathrow to Washington?

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

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.

£389+ Cheap Flights from London Heathrow Airport to Washington

Cheap flight deals from Heathrow to Washington

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 15 October 2026.

Tue 15/1212:15 -

1 stop12h 45m

Fri 25/1214:35 -

1 stop12h 15m

Deal found 11/10£414

Sat 31/1012:20 -

Nonstop10h 34m

Sat 14/1109:45 -

1 stop14h 00m

Deal found 14/10£414

Thu 22/1011:40 -

Nonstop10h 20m

Wed 4/1116:50 -

Nonstop9h 50m

Deal found 14/10£415

Mon 23/1114:45 -

Nonstop10h 15m

Sun 6/1218:45 -

Nonstop9h 35m

Deal found 12/10£416

Thu 22/1009:55 -

1 stop14h 40m

Tue 3/1116:50 -

Nonstop9h 50m

Deal found 14/10£417

Wed 21/1006:30 -

2 stops22h 20m

Sun 1/1106:00 -

1 stop17h 05m

Deal found 14/10£418

Tue 15/1212:15 -

1 stop12h 45m

Thu 7/114:35 -

1 stop12h 15m

Deal found 11/10£419

Wed 21/1011:40 -

Nonstop10h 20m

Fri 13/1116:50 -

Nonstop9h 50m

Deal found 14/10£421

Fri 23/1006:30 -

2 stops20h 35m

Sun 1/1106:00 -

1 stop17h 05m

Deal found 14/10£422

Tue 27/1006:20 -

1 stop15h 30m

Sun 1/1106:00 -

1 stop17h 05m

Deal found 14/10£423

Sat 5/1206:30 -

2 stops18h 14m

Fri 11/1213:25 -

1 stop12h 35m

Deal found 14/10£423

Wed 25/1114:45 -

Nonstop10h 15m

Tue 1/1218:45 -

Nonstop9h 35m

Deal found 10/10£424

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 15 October 2026.

Mon 1/312:20 -

Nonstop10h 19m

Wed 10/317:00 -

Nonstop9h 40m

Deal found 14/10£425

Sat 12/1214:45 -

Nonstop10h 15m

Thu 14/118:40 -

Nonstop9h 40m

Deal found 11/10£431

Thu 14/120:35 -

1 stop28h 25m

Mon 18/114:35 -

1 stop20h 55m

Deal found 14/10£508

Wed 24/209:00 -

2 stops22h 34m

Fri 12/314:50 -

1 stop18h 15m

Deal found 14/10£541

Mon 8/208:55 -

1 stop14h 08m

Fri 12/216:55 -

Nonstop9h 45m

Deal found 13/10£555

Thu 14/114:55 -

Nonstop9h 55m

Mon 18/114:39 -

1 stop12h 56m

Deal found 14/10£583

Sat 28/1109:25 -

Nonstop10h 00m

Thu 3/1207:30 -

1 stop20h 40m

Deal found 12/10£598

Wed 17/314:45 -

1 stop16h 29m

Wed 7/406:00 -

2 stops17h 10m

Deal found 14/10£663

Thu 26/1114:45 -

Nonstop10h 15m

Fri 4/1218:45 -

Nonstop9h 35m

Deal found 12/10£431

Wed 24/309:00 -

2 stops22h 33m

Mon 12/407:00 -

2 stops15h 30m

Deal found 13/10£566

Tue 23/314:45 -

1 stop30h 42m

Sat 17/405:06 -

1 stop25h 59m

Deal found 14/10£515

Thu 21/114:45 -

1 stop17h 05m

Sun 24/113:59 -

1 stop14h 21m

Deal found 14/10£519

Mon 14/1207:50 -

2 stops21h 11m

Mon 4/107:00 -

1 stop21h 00m

Deal found 15/10£594

Thu 21/114:45 -

1 stop31h 47m

Mon 25/106:08 -

1 stop22h 12m

Deal found 14/10£519

Thu 8/415:05 -

1 stop31h 33m

Sun 11/419:32 -

2 stops28h 13m

Deal found 14/10£597

Mon 9/1114:45 -

1 stop17h 11m

Mon 16/1117:32 -

1 stop34h 48m

Deal found 12/10£530

Tue 24/1120:35 -

2 stops52h 23m

Tue 1/1215:14 -

2 stops44h 16m

Deal found 10/10£779

Thu 26/1112:15 -

2 stops33h 11m

Thu 3/1219:31 -

2 stops31h 19m

Deal found 12/10£861

Tue 24/1120:35 -

2 stops35h 24m

Tue 1/1214:00 -

2 stops45h 30m

Deal found 10/10£801

Wed 25/1115:20 -

2 stops27h 18m

Wed 2/1209:00 -

1 stop16h 40m

Deal found 11/10£688

Thu 12/1114:45 -

1 stop17h 11m

Mon 16/1117:32 -

1 stop34h 48m

Deal found 14/10£576

Tue 24/1113:35 -

2 stops39h 22m

Tue 1/1209:00 -

1 stop12h 55m

Deal found 10/10£688

Tue 24/1114:45 -

1 stop17h 04m

Tue 1/1215:14 -

1 stop13h 06m

Deal found 10/10£591

Sun 21/307:30 -

2 stops23h 26m

Sat 10/405:06 -

2 stops29h 34m

Deal found 14/10£972

Thu 21/115:20 -

2 stops28h 06m

Mon 25/112:40 -

1 stop13h 00m

Deal found 14/10£728

Tue 24/1114:45 -

1 stop17h 14m

Tue 1/1214:00 -

1 stop14h 20m

Deal found 10/10£662

Mon 9/1109:00 -

2 stops19h 57m

Mon 16/1107:00 -

2 stops18h 40m

Deal found 12/10£748

Tue 24/1114:45 -

1 stop14h 19m

Tue 1/1212:37 -

1 stop15h 43m

Deal found 10/10£691

Thu 14/107:40 -

2 stops17h 45m

Mon 18/105:00 -

2 stops16h 55m

Deal found 14/10£818

Thu 14/114:45 -

1 stop15h 42m

Mon 18/112:35 -

1 stop15h 45m

Deal found 10/10£729

Find flight deals from Heathrow to Washington

Round-trip from	£414
One-way from	£389
Popular in	August
Cheapest in	February
Average price	£546
Good round-trip deal	£430 or less
Good one-way deal	£400 or less

Icelandair
15/12-25/12
2 total stops
25h 00m total
London to Washington

Search Deals

Virgin Atlantic
24/12-31/12
Nonstop
10h 30m total
London to Washington

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£33 potential increase over avg. return price).

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 October 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Washington.

Search Deals

Price to beat on a one-way flight from London Heathrow to Washington.

Search Deals

Cheapflights Fare Finder

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

Tue 16/3

09:30-00:33

2 stops22h 03m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£390

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 13/3

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Tue 16/3

14:45-17:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 12/3

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 1/2

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 11/1

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Tue 15/12

09:50-23:53

1 stop22h 03m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£393

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 25/2

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£393

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Wed 7/4

17:00-19:10

Nonstop10h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£395

LondonPullman

LHR London Heathrow - PUW Pullman Moscow Regional

LHRPUW

London Heathrow

Thu 18/3

14:45-13:03

1 stop29h 18m

Pullman Moscow Regional

Wed 31/12

00:00-09:00

Nonstop0h 00m

£417

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

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-PSC

LHR-ALW

LHR-BLI

LHR-PUW

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-PSC

LHR-ALW

LHR-BLI

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 £489). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £676). 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?

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.

Weekly flight availability from London Heathrow Airport to State of Washington

The most flights from LHR to USWA are scheduled on a Monday (24 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (16 on average).

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 £438 and £596 in December.
The cheapest return price found within the last 5 days was £414 on Icelandair (15 Dec–25 Dec).

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 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.

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

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

13,072 reviews

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

KLM

7.8

Good

1,588 reviews

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Virgin Atlantic

7.5

Good

695 reviews

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Icelandair

6.9

Okay

758 reviews

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

British Airways

6.7

Okay

8,261 reviews

Alaska Airlines

7.9

Good

13,072 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Related info for your journey

How long is the flight from London Heathrow Airport to State of Washington?
KLM, Alaska Airlines, and Icelandair can get you from London Heathrow Airport to State of Washington in just under 10h 15m. Your travel time can differ by up to 18h 10m. 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 (83%), KLM (83%) and SAUDIA (83%).
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 £1,757, our data indicates the cheapest price to be £350. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £339.
Can I find deals for flights from Heathrow to Washington that include hotel bookings?
Yes. In addition to deals on Heathrow to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Washington.
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 £489). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £676). 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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Top 10 airlines flying from Heathrow to Washington

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£333	Average£492	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£339	Average£528	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£375	Average£496	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£397	Average£656	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Delta	Cheapest£404	Average£647	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Virgin Atlantic	Cheapest£413	Average£703	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	Cheapest£415	Average£616	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Alaska Airlines	Cheapest£432	Average£565	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
KLM	Cheapest£434	Average£626	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£444	Average£647	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

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!

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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.

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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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Washington from £389

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Washington

Cheapest flights from Heathrow to WashingtonExplore 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 15 October 2026.

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 15 October 2026.

Best flights from Heathrow to WashingtonDiscover 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 15 October 2026.

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 15 October 2026.

Direct flights from Heathrow to WashingtonExplore direct flight options from Heathrow to Washington based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 October 2026.

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 15 October 2026.

Last-minute flights from Heathrow to WashingtonDiscover last-minute flight deals from Heathrow to Washington. Data last updated 15 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Washington. Data last updated 15 October 2026 and is based on user searches.

One-way flights from Heathrow to WashingtonSearch for one-way flight options from Heathrow to Washington. Find affordable one-way fares based on user searches. Data last updated 15 October 2026.

Search for one-way flight options from Heathrow to Washington. Find affordable one-way fares based on user searches. Data last updated 15 October 2026.

Find flight deals from Heathrow to Washington

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Washington that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from London Heathrow Airport to State of Washington?

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 15 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.

Weekly flight availability from London Heathrow Airport to State of Washington

Explore weekly flight availability from Heathrow 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 15 October 2026.

The most flights from LHR to USWA are scheduled on a Monday (24 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (16 on average).

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 £438 and £596 in December.The cheapest return price found within the last 5 days was £414 on Icelandair (15 Dec–25 Dec).

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 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.

Related info for your journey

How long is the flight from London Heathrow Airport to State of Washington?

What are the most popular routes from London Heathrow Airport to State of Washington?

What are the most reliable airlines from London Heathrow Airport to State of Washington?

What are the cheapest flights from London Heathrow Airport to State of Washington?

Can I find deals for flights from Heathrow to Washington that include hotel bookings?

How can I find direct flights from Heathrow to Washington?

Can I find deals for business class flights from Heathrow to Washington?

What is the cheapest month to book a flight from London Heathrow Airport to State of Washington?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Washington

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

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Heathrow and Washington flights

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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 15 October 2026.

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 15 October 2026.

Direct flights from Heathrow to Washington
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Last-minute flights from Heathrow to Washington
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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 15 October 2026.

London Heathrow Airport to State of Washington flights typically cost between £438 and £596 in December.
The cheapest return price found within the last 5 days was £414 on Icelandair (15 Dec–25 Dec).