Heathrow

$271+ Cheap flights from Washington to Heathrow (LHR)

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
Jan 26 — Feb 21
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Cheap flight deals from Washington to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$585
(CrystalTravel)

One-way from

$274
(Kiwi.com)

Good round-trip deal

$709 or less

Good one-way deal

$466 or less
From Washington to London Heathrow
One-way flight from Washington to London Heathrow
Price to beat on a round-trip flight from Washington to London Heathrow.
Price to beat on a one-way flight from Washington to London Heathrow.

Find flight deals from Washington to Heathrow

Cheapest flights from Washington to Heathrow
Explore the most affordable flight options available from Washington to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:00 amSEA - LHR
1 stop14h 20mIberia
Fri 11/712:10 pmLHR - SEA
1 stop17h 05mIberia
Deal found 1/21$586
This lol.travel deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/45:45 pmSEA - LHR
Nonstop9h 25mVirgin Atlantic
Tue 3/116:20 amLHR - SEA
1 stop13h 00mVirgin Atlantic
Deal found 1/20$587
This oojo deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 pmSEA - LHR
1 stop17h 20mIcelandair
Sat 10/119:25 pmLHR - SEA
1 stop31h 15mIcelandair
Deal found 1/19$591
This Booking.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/410:35 amSEA - LHR
2 stops14h 45mAir Canada
Wed 3/123:00 pmLHR - SEA
2 stops30h 30mAir Canada
Deal found 1/20$608
This Cheapflightsfares deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/257:00 amSEA - LHR
1 stop15h 20mBritish Airways
Tue 3/49:25 amLHR - SEA
Nonstop9h 55mBritish Airways
Deal found 1/19$612
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/105:45 pmSEA - LHR
Nonstop9h 25mDelta
Thu 2/206:30 amLHR - SEA
1 stop13h 16mDelta
Deal found 1/21$613
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/410:35 amSEA - LHR
1 stop15h 35mMultiple Airlines
Wed 3/126:30 amLHR - SEA
2 stops18h 55mMultiple Airlines
Deal found 1/20$629
This Lufthansa deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1510:35 amSEA - LHR
1 stop18h 45mLufthansa
Tue 5/66:30 amLHR - SEA
2 stops23h 43mLufthansa
Deal found 1/21$632
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:20 pmPDX - LHR
1 stop21h 00mIcelandair
Fri 10/31:05 pmLHR - PDX
1 stop12h 50mIcelandair
Deal found 1/20$641
This Cheapflightsfares deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/126:30 pmPDX - LHR
Nonstop9h 40mBritish Airways
Tue 2/182:20 pmLHR - PDX
Nonstop10h 15mBritish Airways
Deal found 1/20$642
This Finnair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/117:30 pmPDX - LHR
Nonstop9h 40mFinnair
Tue 3/182:20 pmLHR - PDX
Nonstop10h 15mFinnair
Deal found 1/20$643
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1910:35 amSEA - LHR
1 stop15h 35mUnited Airlines
Tue 2/253:00 pmLHR - SEA
2 stops35h 45mUnited Airlines
Deal found 1/20$643

Find flights from Washington to Heathrow within your budget

Customize your flight search to find flights from Washington to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 3/4

5:45 pm-11:10 am

Nonstop9h 25m

London Heathrow

Tue 3/11

6:20 am-12:20 pm

1 stop13h 00m

$587

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 3/4

6:50 pm-12:15 pm

Nonstop9h 25m

London Heathrow

Wed 3/12

3:00 pm-5:55 pm

Nonstop9h 55m

$588

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 2/3

10:35 am-9:20 am

2 stops14h 45m

London Heathrow

Tue 2/18

1:25 pm-10:07 pm

2 stops16h 42m

$602

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 3/1

2:35 pm-10:50 am

1 stop12h 15m

London Heathrow

Wed 3/5

12:15 pm-5:00 pm

1 stop12h 45m

$607

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 2/25

7:00 am-6:20 am

1 stop15h 20m

London Heathrow

Tue 3/4

9:25 am-11:20 am

Nonstop9h 55m

$612

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 2/10

5:45 pm-11:10 am

Nonstop9h 25m

London Heathrow

Fri 2/21

6:30 am-11:46 am

1 stop13h 16m

$613

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 3/4

9:20 am-10:10 am

2 stops16h 50m

London Heathrow

Tue 3/11

6:30 am-6:25 pm

2 stops18h 55m

$629

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 4/15

10:35 am-1:20 pm

1 stop18h 45m

London Heathrow

Tue 5/6

6:30 am-10:13 pm

2 stops23h 43m

$632

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 2/18

6:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

Tue 2/25

2:20 pm-4:35 pm

Nonstop10h 15m

$641

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 3/11

7:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

Tue 3/18

2:20 pm-5:35 pm

Nonstop10h 15m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Washington with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Washington to Heathrow

Get recent, data-driven insights about flights from Washington to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from State of Washington to London Heathrow Airport (average of $661). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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 WA to LHR?

Find hourly flight availability from Washington to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

When flying from State of Washington to London Heathrow Airport, 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 State of Washington to London Heathrow Airport

Explore weekly flight availability from Washington to Heathrow. 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 January 21, 2025.

The most flights from USWA to LHR are scheduled on a Tuesday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated January 21, 2025.
Read through reviews of airlines operating flights from Washington to London, such as Icelandair, British Airways and Lufthansa. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good
8,521 reviews
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good
9,706 reviews
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.8
Good
1,341 reviews
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.6
Good
1,286 reviews
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.6
Good
786 reviews
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington to Heathrow. 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 State of Washington to London Heathrow Airport one-way?

    $277 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on WestJet and Aer Lingus, with prices starting from $280 and $374, respectively.

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

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

    No one likes to see their flight delayed. When booking a flight from State of Washington to London Heathrow Airport consider choosing Singapore Airlines (85%), Aeromexico (85%) or KLM (80%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $1,691 for a flight from State of Washington to London Heathrow Airport. The cheapest flight overall is $410 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at $452.

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

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

  • How can I find direct flights from Washington to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Washington to Heathrow 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 State of Washington to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from State of Washington to London Heathrow Airport (average of $661). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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

Traveling to a place near Washington?

Book flights to Washington if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
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Gatwick
Horley
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Dover
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Watford
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Croydon
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Ilford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Heathrow

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

Top 10 airlines flying from Washington to Heathrow

Discover the top 10 airlines that operate flights from Washington to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$384Average$690FlexibilityNo cancel feeOn-time76%
FinnairCheapest$493Average$762FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$498Average$670FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$572Average$892FlexibilityNo cancel feeOn-time71%
IberiaCheapest$582Average$751FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$588Average$901FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$588Average$855FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$597Average$844FlexibilityNo cancel feeOn-time75%
DeltaCheapest$599Average$879FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$601Average$864FlexibilityNo cancel feeOn-time72%
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