Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Washington from £264

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
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Washington

Keep the following information in mind while searching for Heathrow to Washington flight deals. Data was last updated 16 January 2026.

Round-trip from

£382

One-way from

£264

Popular in

July

Cheapest in

January

Average price

£480

Good round-trip deal

£465 or less

Good one-way deal

£460 or less
Lufthansa
  • Lufthansa
  • 28/1-3/2
  • 3 total stops
  • 30h 50m total
  • London to Washington
Search Deals
2/3
  • 2/3
  • 3 total stops
  • 45h 49m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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

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 16 January 2026.

Wed 28/106:35
LHR
-
SEA
1 stop14h 45m
Lufthansa
Tue 3/210:05
SEA
-
LHR
2 stops16h 05m
Lufthansa
Deal found 15/1£382
Thu 29/106:00
LHR
-
SEA
2 stops24h 43m
SWISS
Thu 5/212:35
SEA
-
LHR
2 stops21h 15m
SWISS
Deal found 15/1£383
Tue 14/412:00
LHR
-
SEA
1 stop13h 10m
British Airways
Tue 21/420:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 15/1£383
Thu 29/106:30
LHR
-
SEA
1 stop13h 40m
Lufthansa
Wed 4/209:55
SEA
-
LHR
2 stops16h 15m
Lufthansa
Deal found 15/1£384
Mon 26/110:00
LHR
-
SEA
1 stop33h 50m
Delta
Mon 9/216:55
SEA
-
LHR
Nonstop9h 35m
Delta
Deal found 14/1£386
Wed 21/106:30
LHR
-
SEA
1 stop13h 20m
KLM
Thu 19/319:25
SEA
-
LHR
Nonstop9h 30m
KLM
Deal found 14/1£387
Thu 3/913:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Thu 17/915:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 14/1£388
Mon 14/906:30
LHR
-
SEA
1 stop13h 25m
United Airlines
Fri 18/922:10
SEA
-
LHR
1 stop24h 45m
United Airlines
Deal found 14/1£389
Wed 6/508:40
LHR
-
SEA
2 stops18h 57m
Air Canada
Sun 24/505:40
SEA
-
LHR
2 stops19h 55m
Air Canada
Deal found 14/1£389
Fri 11/906:30
LHR
-
SEA
1 stop13h 25m
United Airlines
Fri 18/912:15
SEA
-
LHR
2 stops48h 45m
United Airlines
Deal found 15/1£390
Wed 21/106:30
LHR
-
SEA
1 stop13h 20m
Delta
Sat 10/1021:55
SEA
-
LHR
1 stop32h 40m
Delta
Deal found 14/1£391
Mon 9/212:00
LHR
-
PDX
1 stop17h 49m
United Airlines
Sun 15/207:00
PDX
-
LHR
1 stop16h 55m
United Airlines
Deal found 14/1£405

Cheapflights Fare Finder

 
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 16 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Washington that are best for you.

Fly from

Heathrow

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 26/1

06:30-11:50

1 stop13h 20m

Seattle/Tacoma Intl

Mon 9/2

16:55-10:30

Nonstop9h 35m

£386

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 24/2

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Tue 3/3

18:25-11:55

Nonstop9h 30m

£386

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 25/1

08:40-11:50

1 stop35h 10m

Seattle/Tacoma Intl

Thu 19/3

19:25-11:55

Nonstop9h 30m

£387

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 26/1

08:40-11:50

1 stop35h 10m

Seattle/Tacoma Intl

Mon 16/3

17:40-10:30

Nonstop9h 50m

£387

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 27/1

11:45-11:50

1 stop32h 05m

Seattle/Tacoma Intl

Sun 15/3

22:58-06:20

1 stop24h 22m

£387

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 26/1

06:30-11:19

2 stops36h 49m

Seattle/Tacoma Intl

Mon 9/2

13:45-20:10

1 stop22h 25m

£389

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 24/3

20:35-18:00

1 stop28h 25m

Portland

Thu 2/4

15:30-11:55

1 stop12h 25m

£477

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

10:20-21:12

2 stops41h 52m

Spokane

Tue 17/3

12:25-08:35

1 stop13h 10m

£498

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 27/4

13:05-18:00

1 stop12h 55m

Portland

Tue 5/5

15:30-11:55

1 stop12h 25m

£504

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 27/4

13:05-18:00

1 stop12h 55m

Portland

Sat 2/5

15:30-20:20

1 stop20h 50m

£504

Flights are sorted by cheapest return flights first.

Deals found on 13/1

Showing 1-10 of 54 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.

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 £376). 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?

Find hourly flight availability from Heathrow to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 January 2026.

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 16 January 2026.

The most flights from LHR to USWA are scheduled on a Monday (15 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 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 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 16 January 2026.
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
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,440 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,522 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Icelandair
7.1
Good
596 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Overall

7.7

Food

7.2

Entertainment

7.1

Boarding

7.8

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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?

    Delta, KLM, and Icelandair can get you from London Heathrow Airport to State of Washington in just under 13h 10m. Your travel time can differ by up to 15h 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 £360 on Icelandair. Other airlines that offer cheap prices include British Airways from £371 and Aer Lingus from £387 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 - Pasco Tri Cities 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 (95%), KLM (95%) and Air France (95%).

  • 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 £1,569, our data indicates the cheapest price to be £384. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £297.

  • 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 £376). 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

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
Gatwick to Newark flights
Gatwick to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Heathrow to Miami flights
Stansted to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Heathrow to Orlando flights
London City to Newark flights
Luton to John F Kennedy Intl flights
Heathrow to Las Vegas flights
Heathrow to Dallas/Fort Worth flights
Luton to Newark flights
Gatwick to Orlando flights
Heathrow to Boston flights
Stansted to Newark flights
Heathrow to San Francisco flights
Heathrow to Seattle flights
Gatwick to Miami flights
Heathrow to Dulles Intl flights
Heathrow to O'Hare Intl flights
Gatwick to Los Angeles flights
London City to Miami flights
London City to Orlando flights
London City to Los Angeles flights
Stansted to Miami flights
Heathrow to Tampa flights
Heathrow to Atlanta flights
Heathrow to Hobby flights
Heathrow to Baltimore flights
Stansted to Los Angeles flights
Gatwick to Boston flights
Heathrow to Nashville flights
Heathrow to Ontario flights
Heathrow to George Bush Intcntl flights
Luton to Miami flights
Gatwick to Las Vegas flights
Stansted to Orlando flights
Heathrow to Austin flights
Heathrow to Denver flights
Heathrow to Fort Lauderdale flights
London City to Las Vegas flights
Gatwick to Dallas/Fort Worth flights
London City to Boston flights
Gatwick to San Francisco flights
Heathrow to Philadelphia flights
Gatwick to Seattle 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 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£336Average£548FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£356Average£468FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£391Average£616FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£407Average£610FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£418Average£672FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapest£421Average£498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£423Average£607FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£432Average£615FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£437Average£586FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£445Average£603FlexibilityNo 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.