What are the cheapest airlines to fly from London Heathrow Airport to State of Washington one-way?

One-way options have recently been found by users for as low as £401 on WestJet. Other airlines that offer cheap prices include Aer Lingus from £403 and Lufthansa from £477 one-way.

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 £1,491, our data indicates the cheapest price to be £474. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £309.

What are the most popular airlines that fly from London Heathrow Airport to State of Washington?

When booking a flight from London Heathrow Airport to State of Washington, you may want to consider flying on Air Canada, Air France or Finnair as they are the most popular for this route.

How far in advance should I book a flight from London Heathrow Airport to State of Washington?

To save on the cost of your flight from London Heathrow Airport to State of Washington, book at least 44 days before your planned departure. Booking around this time can save you about 40% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £593 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £800.

What is the cheapest month to fly from London Heathrow Airport to State of Washington?

January can be a great time to fly to State of Washington from London Heathrow Airport with a flight ticket averaging about £581. Cheapflights users have found deals in the month of January for as cheap as £331. The most expensive prices can be found in the month of August.

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.

£334+ Flights from London Heathrow Airport to Washington

Cheap flight deals from Heathrow to Washington

Round-trip from	£429
One-way from	£334
Popular in	August
Cheapest in	January
Average price	£536
Good round-trip deal	£549 or less
Good one-way deal	£629 or less

Icelandair
28/4-13/5
2 total stops
51h 50m total
London to Washington

Search Deals

9/6
2 total stops
33h 44m total
London to Washington

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£84 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

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

Find flight deals from Heathrow to Washington

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 16 April 2025.

Mon 28/421:25LHR - SEA

1 stop31h 15mIcelandair

Tue 13/515:45SEA - LHR

1 stop20h 35mIcelandair

Deal found 15/4£429

Thu 1/506:30LHR - SEA

1 stop13h 55mLufthansa

Thu 8/507:00SEA - LHR

1 stop17h 20mLufthansa

Deal found 15/4£451

Fri 9/507:25LHR - SEA

1 stop17h 34mMultiple Airlines

Sat 17/507:20SEA - LHR

1 stop18h 40mMultiple Airlines

Deal found 15/4£454

Tue 6/511:00LHR - SEA

1 stop16h 36mFinnair

Tue 13/523:58SEA - LHR

2 stops25h 52mFinnair

Deal found 15/4£455

Tue 6/508:45LHR - SEA

2 stops18h 52mAir Canada

Tue 13/507:20SEA - LHR

1 stop15h 10mAir Canada

Deal found 15/4£458

Fri 30/506:40LHR - SEA

1 stop15h 10mScandinavian Airlines

Fri 6/616:00SEA - LHR

1 stop16h 00mScandinavian Airlines

Deal found 14/4£459

Wed 30/410:50LHR - SEA

1 stop14h 09mUnited Airlines

Wed 7/508:10SEA - LHR

1 stop14h 45mUnited Airlines

Deal found 15/4£463

Mon 5/506:20LHR - SEA

1 stop18h 39mBritish Airways

Mon 12/520:20SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 14/4£466

Wed 30/408:40LHR - SEA

2 stops20h 35mSWISS

Wed 7/514:40SEA - LHR

2 stops36h 45mSWISS

Deal found 15/4£467

Mon 28/419:45LHR - SEA

1 stop23h 30mVirgin Atlantic

Tue 13/517:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 15/4£469

Mon 28/411:30LHR - SEA

1 stop14h 10mAir France

Tue 13/520:20SEA - LHR

Nonstop9h 55mAir France

Deal found 15/4£473

Mon 28/406:30LHR - SEA

1 stop13h 15mKLM

Tue 13/520:20SEA - LHR

Nonstop9h 55mKLM

Deal found 15/4£485

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 16 April 2025.

Mon 28/421:25LHR - SEA

1 stop31h 15mIcelandair

Tue 13/515:45SEA - LHR

1 stop20h 35mIcelandair

Deal found 15/4£429

Thu 1/506:30LHR - SEA

1 stop13h 55mLufthansa

Thu 8/507:00SEA - LHR

1 stop17h 20mLufthansa

Deal found 15/4£451

Fri 9/507:25LHR - SEA

1 stop17h 34mMultiple Airlines

Sat 17/507:20SEA - LHR

1 stop18h 40mMultiple Airlines

Deal found 15/4£454

Tue 6/511:00LHR - SEA

1 stop16h 36mFinnair

Tue 13/523:58SEA - LHR

2 stops25h 52mFinnair

Deal found 15/4£455

Tue 6/508:45LHR - SEA

2 stops18h 52mAir Canada

Tue 13/507:20SEA - LHR

1 stop15h 10mAir Canada

Deal found 15/4£458

Fri 30/506:40LHR - SEA

1 stop15h 10mScandinavian Airlines

Fri 6/616:00SEA - LHR

1 stop16h 00mScandinavian Airlines

Deal found 14/4£459

Mon 28/406:20LHR - SEA

1 stop18h 39mBritish Airways

Mon 5/513:30SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 15/4£461

Wed 30/410:50LHR - SEA

1 stop14h 09mUnited Airlines

Wed 7/508:10SEA - LHR

1 stop14h 45mUnited Airlines

Deal found 15/4£463

Wed 30/408:40LHR - SEA

2 stops20h 35mSWISS

Wed 7/514:40SEA - LHR

2 stops36h 45mSWISS

Deal found 15/4£467

Mon 28/419:45LHR - SEA

1 stop23h 30mVirgin Atlantic

Tue 13/517:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 15/4£469

Mon 28/411:30LHR - SEA

1 stop14h 10mAir France

Tue 13/520:20SEA - LHR

Nonstop9h 55mAir France

Deal found 15/4£473

Mon 28/406:30LHR - SEA

1 stop13h 15mKLM

Tue 13/520:20SEA - LHR

Nonstop9h 55mKLM

Deal found 15/4£485

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 16 April 2025.

Mon 28/413:25LHR - SEA

Nonstop10h 20mVirgin Atlantic

Tue 13/517:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 15/4£471

Mon 28/417:25LHR - SEA

Nonstop10h 20mAir France

Mon 5/520:20SEA - LHR

Nonstop9h 55mAir France

Deal found 15/4£479

Wed 30/416:30LHR - SEA

Nonstop9h 50mBritish Airways

Wed 7/520:20SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 15/4£481

Wed 30/417:25LHR - SEA

Nonstop10h 20mKLM

Wed 7/520:20SEA - LHR

Nonstop9h 55mKLM

Deal found 15/4£494

Mon 28/417:25LHR - SEA

Nonstop10h 20mDelta

Tue 13/517:35SEA - LHR

Nonstop9h 45mDelta

Deal found 15/4£500

Mon 15/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Mon 29/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 15/4£542

Tue 13/515:40LHR - PDX

Nonstop9h 55mMultiple Airlines

Tue 20/519:25PDX - LHR

Nonstop9h 35mMultiple Airlines

Deal found 15/4£555

Sat 30/816:30LHR - SEA

Nonstop9h 50mAmerican Airlines

Tue 9/913:30SEA - LHR

Nonstop9h 20mAmerican Airlines

Deal found 15/4£570

Mon 28/415:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Mon 12/519:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 15/4£576

Fri 30/513:25LHR - SEA

Nonstop10h 20mMultiple Airlines

Fri 6/617:35SEA - LHR

Nonstop9h 45mMultiple Airlines

Deal found 15/4£580

Thu 4/909:50LHR - SEA

Nonstop9h 45mFinnair

Tue 16/913:30SEA - LHR

Nonstop9h 20mFinnair

Deal found 15/4£580

Tue 26/816:30LHR - SEA

Nonstop9h 50mIberia

Wed 10/913:30SEA - LHR

Nonstop9h 20mIberia

Deal found 15/4£603

Last-minute flights from Heathrow to Washington
Discover last-minute flight deals from Heathrow to Washington. Data last updated 16 April 2025 and is based on user searches.

Mon 21/421:25LHR - SEA

1 stop31h 15mIcelandair

Mon 28/419:00SEA - LHR

1 stop32h 55mIcelandair

Deal found 14/4£455

Tue 22/408:15LHR - SEA

1 stop16h 44mBritish Airways

Wed 30/420:20SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 15/4£480

Tue 22/417:15LHR - SEA

2 stops27h 28mFinnair

Fri 2/522:05SEA - LHR

2 stops24h 35mFinnair

Deal found 15/4£489

Tue 22/408:40LHR - SEA

1 stop15h 20mKLM

Wed 14/520:20SEA - LHR

Nonstop9h 55mKLM

Deal found 15/4£491

Tue 22/417:25LHR - SEA

Nonstop10h 20mAir France

Wed 30/420:20SEA - LHR

Nonstop9h 55mAir France

Deal found 15/4£499

Wed 23/406:30LHR - PDX

2 stops21h 39mUnited Airlines

Sun 27/423:59PDX - LHR

1 stop24h 21mUnited Airlines

Deal found 15/4£542

Thu 24/414:10LHR - SEA

1 stop12h 18mLufthansa

Wed 30/414:18SEA - LHR

1 stop13h 27mLufthansa

Deal found 15/4£468

Thu 24/414:10LHR - SEA

1 stop12h 18mMultiple Airlines

Wed 30/408:15SEA - LHR

1 stop14h 40mMultiple Airlines

Deal found 15/4£468

Thu 24/409:30LHR - SEA

2 stops21h 30mUnited Airlines

Sat 10/507:00SEA - LHR

2 stops19h 00mUnited Airlines

Deal found 16/4£471

Thu 24/414:10LHR - SEA

1 stop27h 43mAir Canada

Sat 10/507:20SEA - LHR

1 stop15h 10mAir Canada

Deal found 15/4£474

Thu 24/417:25LHR - SEA

Nonstop10h 20mVirgin Atlantic

Wed 30/417:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 15/4£492

Thu 24/415:40LHR - PDX

Nonstop9h 55mFinnair

Sun 4/512:03PDX - LHR

1 stop20h 02mFinnair

Deal found 15/4£534

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 16 April 2025.

Mon 9/622:15LHR - PDX

2 stops33h 44mMultiple Airlines

Deal found 15/4£334

Tue 29/715:05LHR - SEA

3 stops29h 53mMultiple Airlines

Deal found 15/4£392

Tue 13/514:10LHR - SEA

1 stop13h 00mWestJet

Deal found 15/4£401

Mon 25/820:10LHR - SEA

1 stop28h 49mAer Lingus

Deal found 15/4£403

Mon 9/613:55LHR - PDX

1 stop30h 57mWestJet

Deal found 15/4£409

Tue 17/617:50LHR - SEA

1 stop31h 09mLufthansa

Deal found 14/4£477

Wed 18/610:20LHR - SEA

1 stop13h 40mFinnair

Deal found 14/4£493

Wed 14/521:25LHR - PDX

1 stop28h 30mIcelandair

Deal found 15/4£497

Wed 14/516:30LHR - SEA

Nonstop9h 50mBritish Airways

Deal found 15/4£514

Tue 22/415:40LHR - PDX

Nonstop9h 55mIberia

Deal found 15/4£520

Tue 22/415:30LHR - PDX

1 stop15h 32mBritish Airways

Deal found 15/4£521

Mon 7/721:25LHR - SEA

1 stop22h 00mIcelandair

Deal found 15/4£528

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

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 28/4

21:25-20:40

1 stop31h 15m

Seattle/Tacoma Intl

Tue 13/5

15:45-20:20

1 stop20h 35m

£429

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 1/5

06:30-12:25

1 stop13h 55m

Seattle/Tacoma Intl

Thu 8/5

07:00-08:20

1 stop17h 20m

£451

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 9/5

07:25-16:59

1 stop17h 34m

Seattle/Tacoma Intl

Sat 17/5

07:20-10:00

1 stop18h 40m

£454

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 6/5

11:00-19:36

1 stop16h 36m

Seattle/Tacoma Intl

Tue 13/5

23:58-09:50

2 stops25h 52m

£455

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 6/5

08:45-19:37

2 stops18h 52m

Seattle/Tacoma Intl

Tue 13/5

07:20-06:30

1 stop15h 10m

£458

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 30/5

06:40-13:50

1 stop15h 10m

Seattle/Tacoma Intl

Fri 6/6

16:00-16:00

1 stop16h 00m

£459

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 30/4

10:50-16:59

1 stop14h 09m

Seattle/Tacoma Intl

Wed 7/5

08:10-06:55

1 stop14h 45m

£463

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 5/5

06:20-16:59

1 stop18h 39m

Seattle/Tacoma Intl

Mon 12/5

20:20-13:40

Nonstop9h 20m

£466

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 30/4

08:40-21:15

2 stops20h 35m

Seattle/Tacoma Intl

Wed 7/5

14:40-11:25

2 stops36h 45m

£467

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 12/5

10:20-16:00

1 stop13h 40m

Seattle/Tacoma Intl

Mon 19/5

17:40-15:10

1 stop13h 30m

£468

Flights are sorted by cheapest return flights first.

Deals found on 15/4

Showing 1-10 of 54 results

...

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.

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

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 £622). Flying from London Heathrow Airport 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 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 (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Washington by month

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.

Temperature in Washington by month

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).

Reviews of airlines servicing Washington

See what other customers who have flown with Delta, KLM and Finnair from London to Washington have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,918 reviews

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,323 reviews

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.5

Good

1,435 reviews

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,580 reviews

Delta

8.0

Very Good

7,918 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from London Heathrow Airport to State of Washington one-way?
One-way options have recently been found by users for as low as £401 on WestJet. Other airlines that offer cheap prices include Aer Lingus from £403 and Lufthansa from £477 one-way.
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 Singapore Airlines (96%), Aeromexico (91%) and KLM (91%).
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 £1,491, our data indicates the cheapest price to be £474. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £309.
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 £622). Flying from London Heathrow Airport 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Washington

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Gatwick to John F Kennedy Intl flights

London City to John F Kennedy Intl flights

Heathrow to LaGuardia flights

Gatwick to Newark flights

London City to Newark flights

Heathrow to Los Angeles flights

Heathrow to Orlando flights

Gatwick to LaGuardia flights

Stansted to Stewart flights

Heathrow to Boston flights

Heathrow to Miami flights

Heathrow to Dallas/Fort Worth flights

Heathrow to San Francisco flights

Heathrow to Las Vegas flights

Heathrow to Seattle flights

Heathrow to O'Hare Intl flights

Heathrow to Hobby flights

Stansted to John F Kennedy Intl flights

Heathrow to Dulles Intl flights

Gatwick to Orlando flights

Heathrow to Baltimore flights

Luton to John F Kennedy Intl flights

Gatwick to Boston flights

London City to Los Angeles flights

Heathrow to George Bush Intcntl flights

London City to Orlando flights

Heathrow to Atlanta flights

Heathrow to Tampa flights

Gatwick to Las Vegas flights

Heathrow to Nashville flights

Heathrow to Denver flights

London City to Miami flights

Gatwick to Los Angeles flights

Heathrow to Raleigh flights

Heathrow to Detroit flights

Gatwick to San Francisco flights

Heathrow to Charlotte flights

London City to Boston flights

London City to San Francisco flights

Gatwick to Miami flights

Gatwick to Stewart flights

London City to LaGuardia flights

London City to Las Vegas flights

Luton to Los Angeles flights

Heathrow to Midway flights

Heathrow to Austin flights

Gatwick to Seattle flights

Stansted to Boston flights

Complete your trip

State of Washington car hire

Seattle/Tacoma Intl Airport car hire

Spokane Airport car hire

Wenatchee Pangborn Field Airport car hire

Pasco Tri Cities Airport car hire

Bellingham Airport car hire

Pullman Moscow Regional Airport car hire

Yakima Air Terminal Airport car hire

Walla Walla Airport car hire

Kenmore Air Harbor Airport car hire

Seattle car hire

Bellingham car hire

Direct flights to United States

Top 10 airlines flying from Heathrow to Washington

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£8	Average£686	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£374	Average£503	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£391	Average£576	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Lufthansa	Cheapest£402	Average£579	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£405	Average£638	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£413	Average£631	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£419	Average£578	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£439	Average£1,033	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Delta	Cheapest£452	Average£841	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Virgin Atlantic	Cheapest£458	Average£794	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic 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!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Washington?

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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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Cheap flights from London Heathrow Airport to Washington from £334

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Washington

Keep the following information in mind while searching for Heathrow to Washington flight deals. Data was last updated 16 April 2025.

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Find 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 16 April 2025.

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 16 April 2025.

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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.

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Everything you need to know about your flight from London Heathrow Airport to Washington

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 16 April 2025.

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 16 April 2025.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington

See what other customers who have flown with Delta, KLM and Finnair from London to Washington have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines to fly from London Heathrow Airport to State of Washington one-way?

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?

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Alternative routes for Heathrow to Washington

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Top 10 airlines flying 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 16 April 2025.