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 £407 on Aer Lingus. Other airlines that offer cheap prices include WestJet from £431 and Icelandair from £453 one-way.

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 £2,156, our data indicates the cheapest price to be £464. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £422.

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 39% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £543 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £789.

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 £553. Cheapflights users have found deals in the month of January for as cheap as £321. 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.

£377+ Flights from London Heathrow Airport to Washington

Cheap flight deals from Heathrow to Washington

Round-trip from	£473
One-way from	£377
Popular in	August
Cheapest in	January
Average price	£721
Good round-trip deal	£528 or less
Good one-way deal	£709 or less

Air Canada
10/9-15/9
4 total stops
36h 41m total
London to Washington

Search Deals

20/8
3 total stops
48h 05m total
London to Washington

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 8 July 2025.

Wed 10/908:40LHR - SEA

2 stops18h 51mMultiple Airlines

Mon 15/910:00SEA - LHR

2 stops17h 50mMultiple Airlines

Deal found 7/7£473

Wed 3/908:40LHR - SEA

2 stops20h 14mSWISS

Thu 11/915:19SEA - LHR

2 stops22h 26mSWISS

Deal found 6/7£474

Sun 24/821:25LHR - SEA

1 stop22h 00mIcelandair

Tue 2/923:30SEA - LHR

1 stop12h 50mIcelandair

Deal found 7/7£474

Tue 9/919:15LHR - SEA

1 stop28h 50mVirgin Atlantic

Tue 23/920:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 5/7£478

Thu 4/921:05LHR - SEA

2 stops24h 45mScandinavian Airlines

Mon 8/916:00SEA - LHR

1 stop18h 30mScandinavian Airlines

Deal found 6/7£480

Tue 9/906:30LHR - SEA

2 stops20h 06mLufthansa

Thu 2/1010:00SEA - LHR

2 stops17h 50mLufthansa

Deal found 6/7£482

Mon 11/809:30LHR - SEA

1 stop14h 30mAmerican Airlines

Thu 21/817:40SEA - LHR

1 stop13h 30mAmerican Airlines

Deal found 5/7£485

Wed 24/906:30LHR - SEA

2 stops15h 46mUnited Airlines

Sat 1/1120:00SEA - LHR

1 stop32h 50mUnited Airlines

Deal found 7/7£486

Wed 27/808:15LHR - SEA

1 stop19h 43mJetBlue

Mon 15/923:40SEA - LHR

1 stop13h 05mJetBlue

Deal found 4/7£488

Tue 26/809:30LHR - SEA

1 stop19h 11mAir Canada

Tue 9/907:15SEA - LHR

1 stop15h 15mAir Canada

Deal found 4/7£495

Mon 25/809:55LHR - SEA

1 stop14h 00mDelta

Tue 9/920:25SEA - LHR

Nonstop9h 50mDelta

Deal found 7/7£498

Wed 24/912:15LHR - SEA

1 stop16h 27mAustrian Airlines

Wed 8/1008:00SEA - LHR

1 stop14h 55mAustrian Airlines

Deal found 7/7£499

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 8 July 2025.

Wed 10/908:40LHR - SEA

2 stops18h 51mMultiple Airlines

Mon 15/910:00SEA - LHR

2 stops17h 50mMultiple Airlines

Deal found 7/7£473

Wed 3/908:40LHR - SEA

2 stops20h 14mSWISS

Thu 11/915:19SEA - LHR

2 stops22h 26mSWISS

Deal found 6/7£474

Thu 7/821:25LHR - SEA

1 stop22h 00mIcelandair

Thu 14/815:45SEA - LHR

1 stop12h 10mIcelandair

Deal found 8/7£474

Thu 4/921:05LHR - SEA

2 stops24h 45mScandinavian Airlines

Mon 8/916:00SEA - LHR

1 stop18h 30mScandinavian Airlines

Deal found 6/7£480

Mon 25/817:25LHR - SEA

Nonstop10h 20mVirgin Atlantic

Mon 15/907:50SEA - LHR

1 stop18h 40mVirgin Atlantic

Deal found 6/7£484

Wed 24/906:30LHR - SEA

2 stops15h 46mUnited Airlines

Sat 1/1120:00SEA - LHR

1 stop32h 50mUnited Airlines

Deal found 7/7£486

Thu 27/1111:10LHR - SEA

2 stops21h 49mLufthansa

Tue 2/1223:50SEA - LHR

1 stop13h 30mLufthansa

Deal found 6/7£493

Thu 11/1213:25LHR - SEA

2 stops28h 06mAir Canada

Tue 16/1205:50SEA - LHR

2 stops17h 20mAir Canada

Deal found 8/7£494

Mon 25/809:55LHR - SEA

1 stop14h 00mDelta

Tue 9/920:25SEA - LHR

Nonstop9h 50mDelta

Deal found 7/7£498

Wed 24/912:15LHR - SEA

1 stop16h 27mAustrian Airlines

Fri 10/1008:00SEA - LHR

1 stop14h 55mAustrian Airlines

Deal found 7/7£499

Tue 23/910:30LHR - PDX

1 stop16h 24mBritish Airways

Mon 29/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 6/7£546

Mon 1/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Tue 16/911:18PDX - LHR

1 stop15h 12mAmerican Airlines

Deal found 8/7£569

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 8 July 2025.

Mon 25/813:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Tue 9/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 6/7£483

Mon 25/809:50LHR - SEA

Nonstop9h 45mBritish Airways

Tue 9/913:30SEA - LHR

Nonstop9h 20mBritish Airways

Deal found 7/7£496

Mon 25/817:25LHR - SEA

Nonstop10h 20mMultiple Airlines

Tue 9/920:25SEA - LHR

Nonstop9h 50mMultiple Airlines

Deal found 6/7£499

Mon 22/917:25LHR - SEA

Nonstop10h 25mDelta

Wed 8/1020:25SEA - LHR

Nonstop9h 50mDelta

Deal found 7/7£507

Mon 1/909:50LHR - SEA

Nonstop9h 45mAmerican Airlines

Thu 11/913:30SEA - LHR

Nonstop9h 20mAmerican Airlines

Deal found 6/7£512

Wed 26/1114:20LHR - PDX

Nonstop10h 15mBritish Airways

Wed 21/118:30PDX - LHR

Nonstop9h 40mBritish Airways

Deal found 7/7£554

Mon 1/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Tue 16/919:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 8/7£576

Mon 1/915:40LHR - PDX

Nonstop9h 55mMultiple Airlines

Tue 16/919:25PDX - LHR

Nonstop9h 35mMultiple Airlines

Deal found 7/7£578

Mon 22/915:40LHR - PDX

Nonstop9h 55mIberia

Tue 30/919:25PDX - LHR

Nonstop9h 35mIberia

Deal found 7/7£696

Mon 22/915:40LHR - PDX

Nonstop9h 55mFinnair

Sun 28/919:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 7/7£735

Last-minute flights from Heathrow to Washington
Discover last-minute flight deals from Heathrow to Washington. Data last updated 8 July 2025 and is based on user searches.

Mon 14/712:05LHR - SEA

1 stop30h 55mLufthansa

Fri 25/714:57SEA - LHR

1 stop13h 23mLufthansa

Deal found 7/7£536

Tue 15/721:25LHR - SEA

1 stop22h 00mIcelandair

Mon 4/819:00SEA - LHR

1 stop32h 55mIcelandair

Deal found 6/7£517

Tue 15/709:55LHR - SEA

1 stop13h 55mMultiple Airlines

Thu 18/920:25SEA - LHR

Nonstop9h 50mMultiple Airlines

Deal found 7/7£520

Tue 15/708:30LHR - SEA

2 stops22h 29mUnited Airlines

Thu 18/911:11SEA - LHR

1 stop14h 29mUnited Airlines

Deal found 7/7£521

Tue 15/706:30LHR - SEA

1 stop17h 20mVirgin Atlantic

Wed 23/717:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 6/7£526

Tue 15/717:25LHR - SEA

Nonstop10h 20mAir France

Thu 18/920:25SEA - LHR

Nonstop9h 50mAir France

Deal found 7/7£590

Tue 15/710:05LHR - SEA

1 stop32h 25mFinnair

Sat 23/813:32SEA - LHR

1 stop33h 48mFinnair

Deal found 7/7£616

Wed 16/706:30LHR - SEA

2 stops22h 39mBritish Airways

Tue 19/813:55SEA - LHR

1 stop14h 50mBritish Airways

Deal found 7/7£532

Wed 16/706:30LHR - SEA

2 stops16h 29mDelta

Mon 18/820:25SEA - LHR

Nonstop9h 50mDelta

Deal found 7/7£538

Wed 16/710:15LHR - SEA

2 stops31h 06mAir Canada

Mon 4/805:30SEA - LHR

2 stops17h 00mAir Canada

Deal found 7/7£538

Wed 16/708:25LHR - PDX

1 stop21h 50mIcelandair

Wed 23/723:40PDX - LHR

1 stop22h 50mIcelandair

Deal found 7/7£629

Wed 16/715:40LHR - PDX

Nonstop9h 55mBritish Airways

Wed 23/719:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 7/7£644

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 8 July 2025.

Wed 20/819:30LHR - GEG

3 stops48h 05mMultiple Airlines

Deal found 6/7£377

Fri 24/1013:45LHR - SEA

3 stops31h 14mMultiple Airlines

Deal found 5/7£402

Wed 10/1208:50LHR - SEA

1 stop17h 30mAer Lingus

Deal found 6/7£407

Tue 9/1207:50LHR - PDX

2 stops23h 34mMultiple Airlines

Deal found 7/7£421

Tue 14/1014:10LHR - SEA

1 stop30h 49mWestJet

Deal found 7/7£431

Sun 12/1013:05LHR - SEA

1 stop12h 45mIcelandair

Deal found 7/7£453

Sat 6/917:30LHR - SEA

2 stops28h 20mScandinavian Airlines

Deal found 7/7£457

Fri 3/1014:10LHR - PDX

1 stop30h 55mWestJet

Deal found 7/7£463

Mon 6/1021:25LHR - PSC

3 stops34h 52mMultiple Airlines

Deal found 6/7£482

Tue 9/1220:35LHR - PDX

1 stop28h 25mIcelandair

Deal found 7/7£513

Wed 19/1109:30LHR - PDX

2 stops19h 56mLufthansa

Deal found 6/7£520

Wed 20/815:10LHR - GEG

1 stop15h 45mIberia

Deal found 6/7£685

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

Wed 10/9

08:40-19:31

2 stops18h 51m

Seattle/Tacoma Intl

Mon 15/9

10:00-11:50

2 stops17h 50m

£473

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 3/9

08:40-20:54

2 stops20h 14m

Seattle/Tacoma Intl

Thu 11/9

15:19-21:45

2 stops22h 26m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 24/8

21:25-11:25

1 stop22h 00m

Seattle/Tacoma Intl

Tue 2/9

23:30-20:20

1 stop12h 50m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 9/9

19:15-16:05

1 stop28h 50m

Seattle/Tacoma Intl

Tue 23/9

20:25-14:15

Nonstop9h 50m

£478

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 4/9

21:05-13:50

2 stops24h 45m

Seattle/Tacoma Intl

Mon 8/9

16:00-18:30

1 stop18h 30m

£480

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 9/9

06:30-18:36

2 stops20h 06m

Seattle/Tacoma Intl

Thu 2/10

10:00-11:50

2 stops17h 50m

£482

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 11/8

09:30-16:00

1 stop14h 30m

Seattle/Tacoma Intl

Thu 21/8

17:40-15:10

1 stop13h 30m

£485

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 24/9

06:30-14:16

2 stops15h 46m

Seattle/Tacoma Intl

Sat 1/11

20:00-11:50

1 stop32h 50m

£486

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 27/8

08:15-19:58

1 stop19h 43m

Seattle/Tacoma Intl

Mon 15/9

23:40-20:45

1 stop13h 05m

£488

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 26/8

09:30-20:41

1 stop19h 11m

Seattle/Tacoma Intl

Tue 9/9

07:15-06:30

1 stop15h 15m

£495

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 45 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 Tuesday, 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?

Reviews of airlines servicing Washington

Get a feel of what it's like to fly with Delta, Alaska Airlines, andAustrian Airlines 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.

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,963 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Alaska Airlines

8.0

Very Good

10,000 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

806 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,312 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,650 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 £407 on Aer Lingus. Other airlines that offer cheap prices include WestJet from £431 and Icelandair from £453 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 Aeromexico (95%), KLM (93%) and Air France (93%).
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 £2,156, our data indicates the cheapest price to be £464. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £422.
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

Heathrow to LaGuardia flights

Gatwick to John F Kennedy Intl flights

Gatwick to Newark flights

London City to John F Kennedy Intl flights

Gatwick to LaGuardia flights

London City to Newark flights

Heathrow to Los Angeles flights

Stansted to John F Kennedy Intl flights

Heathrow to Orlando flights

Heathrow to Miami flights

Luton to John F Kennedy Intl flights

Heathrow to San Francisco flights

Heathrow to O'Hare Intl flights

Heathrow to Las Vegas flights

Heathrow to Boston flights

Heathrow to Dulles Intl flights

Gatwick to Orlando flights

Gatwick to Boston flights

Stansted to Newark flights

Heathrow to Dallas/Fort Worth flights

London City to Los Angeles flights

Heathrow to Seattle flights

Gatwick to Los Angeles flights

Gatwick to Stewart flights

Luton to Newark flights

London City to Orlando flights

Luton to Stewart flights

London City to Miami flights

Heathrow to Atlanta flights

Gatwick to Miami flights

Heathrow to Tampa flights

Heathrow to Baltimore flights

London City to Boston flights

Gatwick to Las Vegas flights

Heathrow to Hobby flights

London City to LaGuardia flights

Gatwick to San Francisco flights

Heathrow to Denver flights

Gatwick to O'Hare Intl flights

Luton to Los Angeles flights

London City to San Francisco flights

Heathrow to Philadelphia flights

London City to O'Hare Intl flights

Heathrow to Midway flights

Heathrow to Raleigh flights

Stansted to Miami flights

Heathrow to Reagan-National flights

Heathrow to Nashville flights

Complete your trip

State of Washington car hire

Seattle/Tacoma Intl Airport car hire

Wenatchee Pangborn Field Airport car hire

Spokane 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£7	Average£654	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£350	Average£473	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£380	Average£560	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Lufthansa	Cheapest£380	Average£539	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£393	Average£571	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£398	Average£551	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£400	Average£596	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£417	Average£983	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£436	Average£745	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Delta	Cheapest£438	Average£772	FlexibilityNo cancel fee	On-timeN/A	Search Delta 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?

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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Cheap flights from London Heathrow Airport to Washington from £377

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 20/8. 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 8 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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 8 July 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 8 July 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 8 July 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 8 July 2025.

How much does it cost for a return flight from London Heathrow Airport to State of Washington?

Reviews of airlines servicing Washington

Get a feel of what it's like to fly with Delta, Alaska Airlines, andAustrian Airlines 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

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 8 July 2025.