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

British Airways, KLM, and Delta can get you from London Heathrow Airport to State of Washington in just under 9h 55m. Your travel time can differ by up to 3h 15m. 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 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 £250 on WestJet. Other airlines that offer cheap prices include British Airways from £368 and Icelandair from £374 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 £1,657, our data indicates the cheapest price to be £409. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £318.

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 (97%), Air France (93%) and Delta (90%).

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.

£331+ Flights from London Heathrow Airport to Washington

Cheap flight deals from Heathrow to Washington

Enter your travel dates to find the best prices.

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 31 December 2025.

Wed 31/1214:10LHR - SEA

1 stop27h 52mBritish Airways

Sat 10/111:55SEA - LHR

1 stop36h 40mBritish Airways

Deal found 30/12£717

Wed 31/1216:30LHR - SEA

1 stop32h 39mBritish Airways

Mon 5/111:20SEA - LHR

1 stop15h 05mBritish Airways

Deal found 30/12£729

Mon 29/1216:30LHR - SEA

1 stop24h 56mIberia

Sat 31/110:50SEA - LHR

1 stop36h 00mIberia

Deal found 29/12£751

Tue 30/1215:00LHR - SEA

1 stop16h 08mIberia

Thu 8/106:00SEA - LHR

1 stop18h 35mIberia

Deal found 29/12£754

Wed 31/1208:50LHR - SEA

1 stop17h 30mAer Lingus

Tue 6/118:50SEA - LHR

Nonstop9h 30mAer Lingus

Deal found 31/12£766

Wed 31/1209:50LHR - SEA

1 stop16h 30mAer Lingus

Wed 7/118:50SEA - LHR

Nonstop9h 30mAer Lingus

Deal found 30/12£786

Wed 31/1207:50LHR - SEA

1 stop18h 30mBritish Airways

Tue 6/118:52SEA - LHR

1 stop35h 08mBritish Airways

Deal found 30/12£799

Tue 30/1220:45LHR - SEA

1 stop29h 35mBritish Airways

Thu 8/108:04SEA - LHR

1 stop16h 11mBritish Airways

Deal found 30/12£800

Tue 30/1220:45LHR - SEA

1 stop29h 35mBritish Airways

Tue 6/118:52SEA - LHR

1 stop35h 08mBritish Airways

Deal found 30/12£805

Wed 31/1212:05LHR - SEA

1 stop16h 52mMultiple Airlines

Tue 6/114:00SEA - LHR

1 stop17h 50mMultiple Airlines

Deal found 31/12£807

Tue 30/1215:00LHR - PDX

1 stop17h 54mAmerican Airlines

Tue 6/107:38PDX - LHR

1 stop15h 12mAmerican Airlines

Deal found 29/12£1,139

Tue 30/1206:35LHR - PDX

2 stops19h 55mMultiple Airlines

Tue 6/119:00PDX - LHR

1 stop32h 50mMultiple Airlines

Deal found 29/12£1,180

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 31 December 2025.

Wed 1/416:30LHR - SEA

Nonstop9h 55mBritish Airways

Wed 29/412:34SEA - LHR

1 stop13h 46mBritish Airways

Deal found 30/12£410

Thu 12/206:30LHR - SEA

1 stop13h 10mKLM

Thu 19/218:25SEA - LHR

Nonstop9h 30mKLM

Deal found 29/12£415

Thu 12/212:20LHR - SEA

Nonstop10h 25mDelta

Thu 19/218:25SEA - LHR

Nonstop9h 30mDelta

Deal found 29/12£428

Wed 11/311:55LHR - SEA

1 stop16h 21mFinnair

Tue 24/319:50SEA - LHR

Nonstop9h 30mFinnair

Deal found 29/12£441

Tue 26/506:00LHR - SEA

2 stops20h 30mSWISS

Mon 8/616:30SEA - LHR

1 stop12h 30mSWISS

Deal found 29/12£442

Mon 27/413:05LHR - PDX

1 stop12h 55mIcelandair

Tue 5/515:30PDX - LHR

1 stop20h 50mIcelandair

Deal found 31/12£513

Mon 26/106:30LHR - PDX

2 stops19h 40mUnited Airlines

Mon 2/215:15PDX - LHR

1 stop12h 35mUnited Airlines

Deal found 29/12£520

Sat 21/213:45LHR - GEG

1 stop15h 22mLufthansa

Sat 7/307:02GEG - LHR

1 stop16h 23mLufthansa

Deal found 30/12£533

Mon 13/415:05LHR - PDX

1 stop31h 35mAir Canada

Sun 26/419:05PDX - LHR

1 stop34h 15mAir Canada

Deal found 31/12£543

Mon 13/415:05LHR - PDX

1 stop31h 35mMultiple Airlines

Sun 26/407:00PDX - LHR

1 stop18h 00mMultiple Airlines

Deal found 31/12£543

Sat 24/106:30LHR - SEA

1 stop13h 20mKLM

Mon 26/116:45SEA - LHR

Nonstop9h 45mKLM

Deal found 29/12£415

Thu 5/312:20LHR - SEA

Nonstop10h 25mDelta

Tue 17/317:40SEA - LHR

Nonstop9h 50mDelta

Deal found 29/12£428

Mon 4/507:40LHR - SEA

1 stop17h 19mBritish Airways

Fri 8/513:35SEA - LHR

Nonstop9h 15mBritish Airways

Deal found 29/12£434

Wed 18/312:20LHR - SEA

Nonstop10h 20mDelta

Sat 28/320:25SEA - LHR

Nonstop9h 50mDelta

Deal found 29/12£428

Wed 28/112:20LHR - SEA

Nonstop10h 29mDelta

Sun 1/316:45SEA - LHR

Nonstop9h 45mDelta

Deal found 28/12£428

Tue 13/107:30LHR - PDX

2 stops22h 19mUnited Airlines

Wed 28/107:00PDX - LHR

1 stop14h 55mUnited Airlines

Deal found 29/12£520

Sun 14/606:20LHR - SEA

1 stop18h 39mBritish Airways

Sun 28/620:20SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 30/12£475

Mon 16/308:30LHR - PDX

2 stops34h 21mUnited Airlines

Thu 26/315:15PDX - LHR

1 stop13h 35mUnited Airlines

Deal found 30/12£520

Sun 21/609:50LHR - SEA

Nonstop9h 45mBritish Airways

Mon 6/720:20SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 29/12£481

Thu 5/206:35LHR - GEG

2 stops20h 41mUnited Airlines

Sun 8/211:25GEG - LHR

1 stop34h 30mUnited Airlines

Deal found 30/12£524

Mon 16/213:45LHR - PDX

Nonstop10h 10mBritish Airways

Mon 2/317:45PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 29/12£514

Tue 10/306:35LHR - GEG

2 stops21h 28mUnited Airlines

Tue 17/305:00GEG - LHR

1 stop21h 40mUnited Airlines

Deal found 29/12£525

Mon 4/507:25LHR - GEG

2 stops22h 10mUnited Airlines

Sun 10/506:00GEG - LHR

1 stop24h 10mUnited Airlines

Deal found 29/12£537

Wed 11/308:20LHR - PDX

1 stop17h 56mBritish Airways

Tue 31/311:46PDX - LHR

1 stop14h 44mBritish Airways

Deal found 30/12£537

Mon 16/206:30LHR - PDX

2 stops20h 19mUnited Airlines

Mon 2/307:00PDX - LHR

2 stops15h 40mUnited Airlines

Deal found 29/12£537

Mon 27/415:40LHR - PDX

Nonstop10h 00mBritish Airways

Tue 5/513:55PDX - LHR

1 stop14h 15mBritish Airways

Deal found 29/12£545

Mon 13/417:50LHR - PDX

2 stops34h 52mUnited Airlines

Sun 26/423:15PDX - LHR

1 stop14h 20mUnited Airlines

Deal found 30/12£542

Wed 4/207:25LHR - PSC

2 stops21h 48mUnited Airlines

Sun 8/205:00PSC - LHR

2 stops22h 15mUnited Airlines

Deal found 28/12£548

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 31 December 2025.

Wed 25/212:20LHR - SEA

Nonstop10h 25mDelta

Wed 11/317:40SEA - LHR

Nonstop9h 50mDelta

Deal found 30/12£408

Thu 12/214:30LHR - SEA

Nonstop10h 05mVirgin Atlantic

Thu 19/216:55SEA - LHR

Nonstop9h 35mVirgin Atlantic

Deal found 29/12£413

Wed 15/409:50LHR - SEA

Nonstop9h 45mAmerican Airlines

Mon 27/413:35SEA - LHR

Nonstop9h 15mAmerican Airlines

Deal found 29/12£423

Mon 12/112:20LHR - SEA

Nonstop10h 29mDelta

Wed 8/721:50SEA - LHR

Nonstop9h 45mDelta

Deal found 30/12£426

Fri 16/112:20LHR - SEA

Nonstop10h 29mDelta

Thu 22/116:45SEA - LHR

Nonstop9h 45mDelta

Deal found 30/12£428

Thu 29/114:30LHR - SEA

Nonstop10h 05mVirgin Atlantic

Thu 5/218:25SEA - LHR

Nonstop9h 30mVirgin Atlantic

Deal found 30/12£428

Tue 19/509:50LHR - SEA

Nonstop9h 45mBritish Airways

Fri 5/613:35SEA - LHR

Nonstop9h 15mBritish Airways

Deal found 29/12£429

Sat 17/115:05LHR - SEA

Nonstop10h 05mVirgin Atlantic

Sat 24/116:45SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 30/12£430

Wed 1/409:50LHR - SEA

Nonstop9h 45mAmerican Airlines

Tue 14/413:35SEA - LHR

Nonstop9h 15mAmerican Airlines

Deal found 29/12£434

Mon 16/213:45LHR - PDX

Nonstop10h 10mBritish Airways

Mon 2/317:45PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 29/12£514

Wed 11/313:45LHR - PDX

Nonstop10h 10mBritish Airways

Tue 31/319:30PDX - LHR

Nonstop9h 30mBritish Airways

Deal found 30/12£531

Mon 9/213:45LHR - PDX

Nonstop10h 10mAmerican Airlines

Mon 23/217:45PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 30/12£556

Last-minute flights from Heathrow to Washington
Discover last-minute flight deals from Heathrow to Washington. Data last updated 31 December 2025 and is based on user searches.

Wed 7/116:20LHR - SEA

2 stops27h 12mUnited Airlines

Sun 1/209:25SEA - LHR

1 stop14h 00mUnited Airlines

Deal found 30/12£422

Wed 7/113:00LHR - SEA

2 stops30h 32mUnited Airlines

Tue 3/217:12SEA - LHR

2 stops20h 08mUnited Airlines

Deal found 30/12£428

Fri 9/115:00LHR - SEA

2 stops31h 31mAir Canada

Thu 22/109:55SEA - LHR

2 stops16h 15mAir Canada

Deal found 29/12£418

Fri 9/109:40LHR - SEA

1 stop20h 33mVirgin Atlantic

Thu 22/116:45SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 29/12£428

Mon 12/113:00LHR - SEA

2 stops28h 15mMultiple Airlines

Mon 26/107:00SEA - LHR

2 stops15h 30mMultiple Airlines

Deal found 30/12£424

Mon 12/112:20LHR - SEA

Nonstop10h 29mDelta

Wed 8/721:50SEA - LHR

Nonstop9h 45mDelta

Deal found 30/12£426

Fri 16/113:25LHR - SEA

2 stops33h 06mAir Canada

Mon 19/105:50SEA - LHR

2 stops17h 20mAir Canada

Deal found 29/12£416

Sun 18/120:35LHR - SEA

1 stop28h 25mIcelandair

Thu 22/114:35SEA - LHR

1 stop12h 15mIcelandair

Deal found 29/12£422

Mon 19/112:15LHR - SEA

1 stop12h 45mIcelandair

Thu 22/114:35SEA - LHR

1 stop12h 15mIcelandair

Deal found 29/12£419

Wed 21/112:00LHR - PDX

1 stop17h 49mUnited Airlines

Mon 26/110:47PDX - LHR

1 stop16h 28mUnited Airlines

Deal found 29/12£402

Sat 24/106:30LHR - SEA

1 stop13h 20mKLM

Mon 26/116:45SEA - LHR

Nonstop9h 45mKLM

Deal found 30/12£415

Fri 30/106:30LHR - SEA

1 stop13h 20mKLM

Mon 2/318:25SEA - LHR

Nonstop9h 30mKLM

Deal found 28/12£423

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 31 December 2025.

Sat 17/114:50LHR - PDX

2 stops24h 33mMultiple Airlines

Deal found 30/12£331

Wed 4/315:15LHR - PDX

3 stops52h 37mMultiple Airlines

Deal found 31/12£335

Wed 28/114:50LHR - PDX

3 stops50h 59mMultiple Airlines

Deal found 30/12£352

Tue 5/522:15LHR - PDX

3 stops32h 38mMultiple Airlines

Deal found 30/12£356

Fri 16/114:50LHR - PDX

3 stops48h 33mMultiple Airlines

Deal found 30/12£359

Mon 4/508:40LHR - PDX

1 stop21h 45mJetBlue

Deal found 30/12£361

Mon 19/120:35LHR - SEA

1 stop28h 25mIcelandair

Deal found 30/12£361

Wed 14/114:50LHR - PDX

2 stops27h 43mMultiple Airlines

Deal found 30/12£364

Sun 26/410:50LHR - SEA

1 stop14h 09mLufthansa

Deal found 29/12£364

Sat 23/517:30LHR - SEA

2 stops30h 30mMultiple Airlines

Deal found 30/12£365

Fri 23/114:50LHR - PDX

3 stops37h 57mMultiple Airlines

Deal found 30/12£365

Mon 16/206:30LHR - SEA

1 stop13h 40mLufthansa

Deal found 31/12£365

Find flight deals from Heathrow to Washington

Round-trip from	£402
One-way from	£331
Popular in	July
Cheapest in	February
Average price	£633
Good round-trip deal	£503 or less
Good one-way deal	£461 or less

United Airlines
21/1-26/1
2 total stops
34h 17m total
London to Washington

Search Deals

17/1
2 total stops
24h 33m total
London to Washington

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 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

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 1/4

16:30-18:25

Nonstop9h 55m

Seattle/Tacoma Intl

Wed 29/4

12:34-10:20

1 stop13h 46m

£410

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 12/2

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Thu 19/2

18:25-11:55

Nonstop9h 30m

£415

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 24/1

06:30-11:50

1 stop13h 20m

Seattle/Tacoma Intl

Mon 26/1

16:45-10:30

Nonstop9h 45m

£415

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 12/2

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Thu 19/2

18:25-11:55

Nonstop9h 30m

£428

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 5/3

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Tue 17/3

17:40-10:30

Nonstop9h 50m

£428

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 18/3

12:20-15:40

Nonstop10h 20m

Seattle/Tacoma Intl

Sat 28/3

20:25-14:15

Nonstop9h 50m

£428

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 28/1

12:20-14:49

Nonstop10h 29m

Seattle/Tacoma Intl

Sun 1/3

16:45-10:30

Nonstop9h 45m

£428

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/5

07:40-16:59

1 stop17h 19m

Seattle/Tacoma Intl

Fri 8/5

13:35-06:50

Nonstop9h 15m

£434

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 11/3

11:55-21:16

1 stop16h 21m

Seattle/Tacoma Intl

Tue 24/3

19:50-12:20

Nonstop9h 30m

£441

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 26/5

06:00-18:30

2 stops20h 30m

Seattle/Tacoma Intl

Mon 8/6

16:30-13:00

1 stop12h 30m

£442

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 51 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 £338). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £505). 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 Tuesday (21 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Washington

Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAir France 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.

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

KLM

7.7

Good

1,435 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Virgin Atlantic

7.5

Good

677 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Air France

7.4

Good

1,515 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Icelandair

7.1

Good

593 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

British Airways

6.7

Okay

7,626 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

How long is the flight from London Heathrow Airport to State of Washington?
British Airways, KLM, and Delta can get you from London Heathrow Airport to State of Washington in just under 9h 55m. Your travel time can differ by up to 3h 15m. 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 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 £250 on WestJet. Other airlines that offer cheap prices include British Airways from £368 and Icelandair from £374 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 Scandinavian Airlines (97%), Air France (93%) and Delta (90%).
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 £1,657, our data indicates the cheapest price to be £409. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £318.
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 £338). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of £505). 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 Newark flights

Heathrow to John F Kennedy Intl flights

Gatwick to John F Kennedy Intl flights

Heathrow to LaGuardia flights

Gatwick to Newark flights

London City to John F Kennedy Intl flights

Stansted to John F Kennedy Intl flights

London City to Newark flights

Luton to John F Kennedy Intl flights

Gatwick to LaGuardia flights

Heathrow to Miami flights

Stansted to Newark flights

Luton to Newark flights

Heathrow to Orlando flights

Heathrow to Los Angeles flights

Heathrow to Boston flights

Heathrow to Las Vegas flights

Heathrow to Dallas/Fort Worth flights

Heathrow to San Francisco flights

Gatwick to Miami flights

Gatwick to Orlando flights

Heathrow to Hobby flights

London City to Miami flights

Stansted to Miami flights

Gatwick to Los Angeles flights

Heathrow to Tampa flights

Heathrow to Seattle flights

London City to Orlando flights

Heathrow to O'Hare Intl flights

Heathrow to Dulles Intl flights

Gatwick to Boston flights

London City to Los Angeles flights

Heathrow to George Bush Intcntl flights

Heathrow to Atlanta flights

Heathrow to Denver flights

Heathrow to Baltimore flights

Stansted to Los Angeles flights

Luton to Miami flights

Gatwick to Las Vegas flights

Heathrow to Fort Lauderdale flights

Heathrow to Ontario flights

Heathrow to Nashville flights

Stansted to Orlando flights

London City to Boston flights

Heathrow to Sky Harbor Intl flights

Gatwick to San Francisco flights

London City to Las Vegas flights

Gatwick to Dallas/Fort Worth flights

Heathrow to Austin flights

Gatwick to Fort Lauderdale flights

Complete your trip

State of Washington car hire

Seattle/Tacoma Intl Airport car hire

Spokane Airport car hire

Pasco Tri Cities Airport car hire

Bellingham Airport car hire

Wenatchee Pangborn Field 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
Icelandair	Cheapest£351	Average£464	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£385	Average£611	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	Cheapest£393	Average£605	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£393	Average£543	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£403	Average£603	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£409	Average£577	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£415	Average£667	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Virgin Atlantic	Cheapest£433	Average£615	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£436	Average£596	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Delta	Cheapest£442	Average£579	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

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Cheap flights from London Heathrow Airport to Washington from £331

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 17/1. 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 31 December 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 31 December 2025.

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 31 December 2025.

Round-trip from

One-way from

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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

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 31 December 2025.

Weekly flight availability from London Heathrow Airport to State of Washington

Reviews of airlines servicing Washington

Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAir France 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.

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

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?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Washington

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

Top 10 airlines flying from Heathrow to Washington

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Washington?

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

Can Cheapflights find flights from Heathrow to Washington with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Washington become cheaper?

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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 31 December 2025.