Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Washington from £385

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
25 Feb — 4 Mar1
1 adult

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 20 February 2025.

Round-trip from

£414

One-way from

£385

Popular in

August

Cheapest in

January

Average price

£525

Good round-trip deal

£512 or less

Good one-way deal

£556 or less
Icelandair
  • Icelandair
  • 21/4-29/4
  • 2 total stops
  • 40h 35m total
  • London to Washington
Search Deals
2/3
  • 2/3
  • 3 total stops
  • 42h 13m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£87 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 20 February 2025.

Mon 21/421:25LHR - SEA
1 stop28h 25mIcelandair
Tue 29/415:45SEA - LHR
1 stop12h 10mIcelandair
Deal found 19/2£414
Thu 6/309:30LHR - SEA
2 stops44h 00mUnited Airlines
Sun 9/319:05SEA - LHR
1 stop32h 05mUnited Airlines
Deal found 19/2£453
Fri 21/307:40LHR - SEA
1 stop13h 40mLufthansa
Fri 28/315:05SEA - LHR
1 stop12h 05mLufthansa
Deal found 19/2£457
Tue 11/308:55LHR - SEA
2 stops19h 35mAir Canada
Tue 18/305:55SEA - LHR
2 stops18h 15mAir Canada
Deal found 18/2£469
Tue 11/308:55LHR - SEA
2 stops20h 58mSWISS
Tue 18/314:50SEA - LHR
2 stops21h 25mSWISS
Deal found 19/2£470
Mon 17/306:30LHR - SEA
1 stop13h 40mMultiple Airlines
Wed 2/419:05SEA - LHR
2 stops30h 55mMultiple Airlines
Deal found 19/2£475
Tue 11/309:25LHR - SEA
Nonstop9h 55mBritish Airways
Tue 1/420:20SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 19/2£483
Mon 17/319:35LHR - SEA
1 stop23h 45mVirgin Atlantic
Wed 2/417:35SEA - LHR
Nonstop9h 50mVirgin Atlantic
Deal found 19/2£484
Mon 21/417:25LHR - SEA
Nonstop10h 20mKLM
Tue 29/411:24SEA - LHR
1 stop15h 36mKLM
Deal found 19/2£487
Tue 22/409:25LHR - SEA
Nonstop9h 45mIberia
Wed 30/420:20SEA - LHR
Nonstop9h 20mIberia
Deal found 19/2£488
Mon 3/306:30LHR - SEA
1 stop13h 07mDelta
Mon 17/318:45SEA - LHR
Nonstop9h 25mDelta
Deal found 19/2£492
Mon 3/314:50LHR - SEA
1 stop31h 31mWestJet
Wed 5/315:15SEA - LHR
1 stop13h 35mWestJet
Deal found 19/2£499

Find flights from Heathrow to Washington within your budget

Customise your flight search to find flights from Heathrow to Washington 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 858,174 searches. Data last updated 20 February 2025.

Fly from

Heathrow

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 21/4

21:25-17:50

1 stop28h 25m

Seattle/Tacoma Intl

Tue 29/4

15:45-11:55

1 stop12h 10m

£414

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 6/3

09:30-21:30

2 stops44h 00m

Seattle/Tacoma Intl

Sun 9/3

19:05-10:10

1 stop32h 05m

£453

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 21/3

07:40-14:20

1 stop13h 40m

Seattle/Tacoma Intl

Fri 28/3

15:05-10:10

1 stop12h 05m

£457

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 11/3

08:55-21:30

2 stops19h 35m

Seattle/Tacoma Intl

Tue 18/3

05:55-07:10

2 stops18h 15m

£469

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 11/3

08:55-22:53

2 stops20h 58m

Seattle/Tacoma Intl

Tue 18/3

14:50-19:15

2 stops21h 25m

£470

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 17/3

06:30-13:10

1 stop13h 40m

Seattle/Tacoma Intl

Wed 2/4

19:05-10:00

2 stops30h 55m

£475

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 11/3

09:25-12:20

Nonstop9h 55m

Seattle/Tacoma Intl

Tue 1/4

20:20-13:40

Nonstop9h 20m

£483

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 17/3

19:35-12:20

1 stop23h 45m

Seattle/Tacoma Intl

Wed 2/4

17:35-11:25

Nonstop9h 50m

£484

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 21/4

17:25-19:45

Nonstop10h 20m

Seattle/Tacoma Intl

Tue 29/4

11:24-11:00

1 stop15h 36m

£487

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 22/4

09:25-11:10

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 30/4

20:20-13:40

Nonstop9h 20m

£488

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 58 results
1
2
3
...
6

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.

Travel insights for flights from Heathrow to Washington

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

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?

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 20 February 2025.

When flying from London Heathrow Airport to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to State of Washington

Explore weekly flight availability from Heathrow to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 20 February 2025.

The most flights from LHR to USWA are scheduled on a Friday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Washington by month

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

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

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated 20 February 2025.
See what other customers who have flown with Delta, Air New Zealand and KLM 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
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
8,220 reviews
Delta
8.0
Very Good
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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 New Zealand
7.9
Good
461 reviews
Delta
8.0
Very Good
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
1,333 reviews
Delta
8.0
Very Good
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
1,274 reviews
Delta
8.0
Very Good
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
1,568 reviews
Delta
8.0
Very Good
8,220 reviews
Check prices

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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

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?

    One-way options have recently been found by users for as low as £389 on WestJet. Other airlines that offer cheap prices include Aer Lingus from £417 and Icelandair from £458 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 (97%), KLM (89%) and Air France (89%).

  • 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 £1,272, our data indicates the cheapest price to be £419. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £408.

  • 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

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

Alternative routes for Heathrow to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
London City to John F Kennedy Intl flights
Gatwick to Newark flights
London City to Newark flights
Gatwick to John F Kennedy Intl flights
Stansted to Stewart flights
Heathrow to Orlando flights
Heathrow to Los Angeles flights
Heathrow to Miami flights
Luton to John F Kennedy Intl flights
Heathrow to Boston flights
Heathrow to O'Hare Intl flights
Heathrow to Las Vegas flights
Gatwick to LaGuardia flights
Heathrow to San Francisco flights
Heathrow to Dallas/Fort Worth flights
Luton to Stewart flights
Luton to Newark flights
Heathrow to Seattle flights
Heathrow to Dulles Intl flights
Stansted to John F Kennedy Intl flights
Gatwick to Orlando flights
London City to Miami flights
Heathrow to Atlanta flights
Heathrow to Baltimore flights
London City to Los Angeles flights
Heathrow to Hobby flights
Gatwick to Boston flights
Heathrow to Tampa flights
London City to Orlando flights
Gatwick to Miami flights
London City to Boston flights
Heathrow to George Bush Intcntl flights
Heathrow to Nashville flights
Gatwick to Los Angeles flights
Heathrow to Denver flights
Gatwick to Las Vegas flights
Heathrow to Charlotte flights
London City to San Francisco flights
Gatwick to O'Hare Intl flights
London City to Las Vegas flights
London City to O'Hare Intl flights
Gatwick to San Francisco flights
Heathrow to Austin flights
Heathrow to Midway flights
Heathrow to Ontario flights
Heathrow to Philadelphia flights
Stansted to Newark flights

Top 10 airlines flying from Heathrow to Washington

Discover the top 10 airlines that operate flights from Heathrow to Washington. 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 858,174 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£368Average£882FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£398Average£536FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£411Average£618FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£425Average£617FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£432Average£682FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£438Average£673FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£439Average£691FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£442Average£723FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£444Average£592FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£461Average£1,090FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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?

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.