What are the cheapest airlines to fly from London to State of Washington one-way?

To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £389. SWISS flights start at £512 while deals on Icelandair start at £516 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 to State of Washington?

While some choose either London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl, London Heathrow - Seattle/Tacoma Intl is the most popular route from London to State of Washington.

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

On average you can expect to pay £1,540 for a flight from London to State of Washington. The cheapest flight overall is £473 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £406.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to State of Washington on time: Scandinavian Airlines (95%), KLM (90%), Air France (90%).

What are the most popular airlines that fly from London to State of Washington?

Consider Air Canada, Air France or Finnair when booking your flight. These represent the most popular airlines when flying from London to State of Washington.

How far in advance should I book a flight from London to State of Washington?

Find a great deal and save up to 40% by booking at least 45 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to State of Washington within the next two weeks, with the cheapest ticket starting at £547.

What is the cheapest month to fly from London to State of Washington?

January can be a great time to fly to State of Washington from London with a flight ticket averaging about £547. Cheapflights users have found deals in the month of January for as cheap as £322. The most expensive prices can be found in the month of August.

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

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

How can I find direct flights from London to Washington?

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

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

Yes. Cheapflights offers flight deals from London 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.

£389+ Cheap Flights from London to Washington

Cheap flight deals from London to Washington

Round-trip from	£473
One-way from	£389
Popular in	August
Cheapest in	January
Average price	£694
Good round-trip deal	£532 or less
Good one-way deal	£637 or less

Virgin Atlantic
9/9-16/9
1 total stop
29h 15m total
London to Washington

Search Deals

WestJet
13/10
2 total stops
34h 14m total
London to Washington

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£60 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 August 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Washington.

Search Deals

Price to beat on a one-way flight from London (LON) to Washington.

Search Deals

Find flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.

Tue 9/906:15LHR - SEA

1 stop19h 25mVirgin Atlantic

Tue 16/920:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 16/8£473

Mon 8/915:40LGW - SEA

1 stop13h 00mIcelandair

Fri 26/915:45SEA - LGW

1 stop14h 55mIcelandair

Deal found 16/8£474

Tue 2/1206:20LHR - SEA

1 stop13h 05mVirgin Atlantic

Tue 9/1216:45SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£474

Wed 3/910:50LHR - SEA

1 stop14h 09mUnited Airlines

Tue 9/908:00SEA - LHR

2 stops19h 45mUnited Airlines

Deal found 18/8£474

Thu 4/909:30LHR - SEA

2 stops19h 24mUnited Airlines

Sat 13/911:11SEA - LHR

1 stop17h 09mUnited Airlines

Deal found 15/8£475

Thu 2/1015:40LGW - SEA

1 stop13h 00mIcelandair

Sun 12/1019:00SEA - LGW

1 stop11h 40mIcelandair

Deal found 16/8£476

Sat 27/906:30LHR - SEA

2 stops15h 46mMultiple Airlines

Sat 4/1005:30SEA - LHR

2 stops17h 00mMultiple Airlines

Deal found 17/8£476

Sat 27/909:50LGW - SEA

1 stop22h 09mMultiple Airlines

Fri 17/1022:55SEA - LGW

1 stop23h 25mMultiple Airlines

Deal found 16/8£476

Mon 15/921:25LHR - SEA

1 stop31h 15mIcelandair

Thu 25/915:45SEA - LHR

1 stop12h 10mIcelandair

Deal found 18/8£476

Tue 30/915:40LGW - SEA

1 stop34h 10mIcelandair

Fri 10/1015:45SEA - LGW

1 stop14h 55mIcelandair

Deal found 16/8£477

Mon 15/908:40LHR - SEA

2 stops17h 56mMultiple Airlines

Mon 15/1210:05SEA - LHR

2 stops16h 40mMultiple Airlines

Deal found 16/8£477

Mon 29/914:10LHR - SEA

1 stop12h 26mAir Canada

Mon 13/1010:00SEA - LHR

2 stops15h 35mAir Canada

Deal found 17/8£478

Best flights from London to Washington
Discover carefully curated flight deals from London to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2025.

Sun 14/914:00LGW - SEA

2 stops42h 30mMultiple Airlines

Tue 7/1022:55SEA - LGW

1 stop23h 25mMultiple Airlines

Deal found 17/8£474

Mon 8/915:40LGW - SEA

1 stop13h 00mIcelandair

Fri 26/915:45SEA - LGW

1 stop14h 55mIcelandair

Deal found 16/8£474

Mon 6/1006:30LHR - SEA

1 stop13h 25mUnited Airlines

Mon 20/1023:40SEA - LHR

1 stop22h 40mUnited Airlines

Deal found 17/8£474

Tue 2/1206:20LHR - SEA

1 stop13h 05mVirgin Atlantic

Tue 9/1219:20SEA - LHR

Nonstop9h 30mVirgin Atlantic

Deal found 18/8£474

Thu 25/909:25LCY - SEA

2 stops17h 11mSWISS

Thu 2/1010:50SEA - LCY

2 stops22h 25mSWISS

Deal found 16/8£506

Thu 13/1118:15LCY - SEA

1 stop25h 55mLufthansa

Mon 17/1114:00SEA - LCY

1 stop19h 40mLufthansa

Deal found 15/8£510

Mon 15/908:20LHR - PDX

1 stop16h 44mBritish Airways

Mon 22/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 17/8£537

Mon 22/914:00LGW - PDX

2 stops29h 14mAmerican Airlines

Mon 6/1005:29PDX - LGW

2 stops18h 41mAmerican Airlines

Deal found 16/8£544

Wed 1/1010:00LCY - PDX

2 stops16h 51mDelta

Wed 8/1013:15PDX - LCY

1 stop11h 35mDelta

Deal found 17/8£600

Wed 1/1006:55LHR - SEA

1 stop18h 04mUnited Airlines

Wed 8/1014:55SEA - LHR

1 stop14h 25mUnited Airlines

Deal found 16/8£474

Mon 6/1015:40LGW - SEA

1 stop13h 00mIcelandair

Fri 10/1019:00SEA - LGW

1 stop11h 40mIcelandair

Deal found 16/8£476

Thu 11/909:30LHR - SEA

2 stops17h 06mMultiple Airlines

Mon 15/907:15SEA - LHR

2 stops18h 45mMultiple Airlines

Deal found 17/8£476

Direct flights from London to Washington
Explore direct flight options from London to Washington based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 August 2025.

Mon 22/913:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Mon 6/1017:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£479

Tue 9/913:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Tue 16/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 16/8£481

Wed 10/913:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Mon 22/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£482

Mon 15/913:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Mon 15/1216:45SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 16/8£482

Tue 16/917:25LHR - SEA

Nonstop10h 25mVirgin Atlantic

Wed 24/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£484

Mon 29/913:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Mon 13/1017:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 16/8£487

Mon 6/1013:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Mon 20/1017:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£488

Wed 3/917:25LHR - SEA

Nonstop10h 25mVirgin Atlantic

Wed 17/920:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 17/8£491

Mon 1/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Wed 10/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 17/8£541

Tue 9/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Thu 18/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 16/8£550

Tue 2/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Thu 11/919:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 17/8£556

Mon 22/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Mon 6/1019:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 16/8£558

Last-minute flights from London to Washington
Discover last-minute flight deals from London to Washington. Data last updated 18 August 2025 and is based on user searches.

Sat 23/821:25LHR - SEA

1 stop22h 00mIcelandair

Sat 6/923:30SEA - LHR

1 stop28h 25mIcelandair

Deal found 17/8£494

Mon 25/821:25LHR - SEA

1 stop22h 00mIcelandair

Wed 3/923:30SEA - LHR

1 stop28h 25mIcelandair

Deal found 18/8£476

Mon 25/813:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Tue 9/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 16/8£481

Mon 25/817:50LCY - SEA

2 stops24h 25mVirgin Atlantic

Tue 9/917:40SEA - LCY

1 stop15h 00mVirgin Atlantic

Deal found 17/8£535

Tue 26/815:40LGW - SEA

1 stop13h 00mIcelandair

Wed 3/919:00SEA - LGW

1 stop11h 40mIcelandair

Deal found 18/8£480

Wed 27/807:30LHR - SEA

2 stops18h 27mUnited Airlines

Wed 10/905:02SEA - LHR

2 stops17h 43mUnited Airlines

Deal found 17/8£480

Wed 27/817:25LHR - SEA

Nonstop10h 20mVirgin Atlantic

Wed 10/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 17/8£482

Wed 27/816:30LHR - SEA

Nonstop9h 50mFinnair

Tue 9/910:57SEA - LHR

1 stop17h 53mFinnair

Deal found 16/8£486

Wed 27/817:25LHR - SEA

Nonstop10h 20mVirgin Atlantic

Tue 9/920:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 17/8£491

Wed 27/814:05LHR - SEA

1 stop14h 40mAir Canada

Tue 9/905:30SEA - LHR

2 stops17h 00mAir Canada

Deal found 17/8£493

Thu 28/808:40LHR - SEA

2 stops20h 14mSWISS

Tue 9/913:05SEA - LHR

2 stops20h 45mSWISS

Deal found 18/8£483

Thu 28/810:15LHR - SEA

2 stops16h 21mAir Canada

Tue 9/919:15SEA - LHR

1 stop34h 05mAir Canada

Deal found 17/8£490

One-way flights from London to Washington
Search for one-way flight options from London to Washington. Find affordable one-way fares based on user searches. Data last updated 18 August 2025.

Mon 13/1010:45LGW - SEA

2 stops34h 14mWestJet

Deal found 17/8£389

Sat 1/1114:00LGW - SEA

1 stop28h 27mMultiple Airlines

Deal found 17/8£390

Thu 13/1106:15STN - SEA

2 stops18h 45mMultiple Airlines

Deal found 17/8£390

Thu 22/117:00STN - SEA

2 stops34h 25mMultiple Airlines

Deal found 17/8£391

Sat 1/1121:10STN - SEA

2 stops27h 50mMultiple Airlines

Deal found 17/8£392

Fri 12/906:00LHR - SEA

3 stops23h 36mMultiple Airlines

Deal found 16/8£392

Mon 6/1009:00LTN - SEA

2 stops16h 50mMultiple Airlines

Deal found 17/8£392

Mon 13/1019:50LHR - SEA

2 stops34h 25mMultiple Airlines

Deal found 16/8£392

Sat 27/910:45LGW - SEA

3 stops33h 50mWestJet

Deal found 16/8£393

Mon 19/114:50LHR - SEA

1 stop31h 30mWestJet

Deal found 17/8£393

Wed 1/1019:20LTN - SEA

2 stops30h 30mMultiple Airlines

Deal found 16/8£393

Mon 6/1006:25STN - SEA

2 stops19h 25mMultiple Airlines

Deal found 17/8£394

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 14/9

14:00-00:30

2 stops42h 30m

Seattle/Tacoma Intl

Tue 7/10

22:55-06:20

1 stop23h 25m

£474

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 8/9

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Fri 26/9

15:45-14:40

1 stop14h 55m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 6/10

06:30-11:55

1 stop13h 25m

Seattle/Tacoma Intl

Mon 20/10

23:40-06:20

1 stop22h 40m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/12

06:20-11:25

1 stop13h 05m

Seattle/Tacoma Intl

Tue 9/12

19:20-12:50

Nonstop9h 30m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 1/10

06:55-16:59

1 stop18h 04m

Seattle/Tacoma Intl

Wed 8/10

14:55-13:20

1 stop14h 25m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 30/9

06:30-11:55

1 stop13h 25m

Seattle/Tacoma Intl

Tue 7/10

07:00-11:45

1 stop20h 45m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 12/9

06:55-16:59

1 stop18h 04m

Seattle/Tacoma Intl

Mon 15/9

07:10-08:20

2 stops17h 10m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 3/9

10:50-16:59

1 stop14h 09m

Seattle/Tacoma Intl

Tue 9/9

08:00-11:45

2 stops19h 45m

£474

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/12

13:30-00:59

2 stops19h 29m

Seattle/Tacoma Intl

Sat 6/12

09:25-07:25

1 stop14h 00m

£475

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 6/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Fri 10/10

19:00-14:40

1 stop11h 40m

£476

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 60 results

...

Best time to book a flight from London to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from London 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 to Washington

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

Currently, January is the cheapest month in which you can book a flight from London to State of Washington (average of £622). Flying from London 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 LON to WA?

When flying from London 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 to State of Washington

The most flights from LON to USWA are scheduled on a Monday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing Washington

Check out reviews from past customers who have flown with KLM, Air France, andVirgin Atlantic from London to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,385 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Air France

7.4

Good

1,468 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Virgin Atlantic

7.4

Good

657 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Icelandair

7.0

Good

527 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

British Airways

6.7

Okay

7,277 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

What are the cheapest airlines to fly from London to State of Washington one-way?
To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £389. SWISS flights start at £512 while deals on Icelandair start at £516 one-way.
What are the most popular routes from London to State of Washington?
While some choose either London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl, London Heathrow - Seattle/Tacoma Intl is the most popular route from London to State of Washington.
What are the most reliable airlines from London to State of Washington?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to State of Washington on time: Scandinavian Airlines (95%), KLM (90%), Air France (90%).
What are the cheapest flights from London to State of Washington?
On average you can expect to pay £1,540 for a flight from London to State of Washington. The cheapest flight overall is £473 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £406.
Can I find deals for flights from London to Washington that include hotel bookings?
Yes. In addition to deals on London to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington.
Can I find deals for business class flights from London to Washington?
Yes. Cheapflights offers flight deals from London 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 to State of Washington?
Currently, January is the cheapest month in which you can book a flight from London to State of Washington (average of £622). Flying from London 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 London to Washington

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Gatwick to Newark flights

London City to John F Kennedy Intl flights

Heathrow to LaGuardia flights

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London City to Los Angeles flights

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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

London to Washington flights

Gatwick to Seattle flights

London City to Seattle flights

Heathrow to Portland flights

Luton to Seattle flights

Stansted to Seattle flights

Gatwick to Portland flights

London City to Portland flights

Stansted to Portland flights

Luton to Portland flights

Heathrow to Pasco flights

Heathrow to Bellingham flights

London City to Spokane flights

Gatwick to Spokane flights

Heathrow to Spokane flights

Southend to Seattle flights

Top 10 airlines flying from London to Washington

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£7	Average£657	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£322	Average£499	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£381	Average£566	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Lufthansa	Cheapest£391	Average£542	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Finnair	Cheapest£400	Average£550	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£401	Average£597	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£401	Average£615	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£428	Average£936	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£438	Average£627	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Delta	Cheapest£440	Average£584	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

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

Deals for London to Washington flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from London to Washington by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from London to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for London to Washington flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London to Washington from £389

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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated 18 August 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 London to Washington

Cheapest flights from London to WashingtonExplore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.

Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.

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Use the filters below to find and compare flights from London to Washington that are best for you.

Best time to book a flight from London to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Washington

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

What is the cheapest time of day to fly from LON to WA?

Find hourly flight availability from London 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 18 August 2025.

Weekly flight availability from London to State of Washington

Explore weekly flight availability from London 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 18 August 2025.

Reviews of airlines servicing Washington

Check out reviews from past customers who have flown with KLM, Air France, andVirgin Atlantic from London to Washington to help guide your decision. Users have also rated airlines 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 London 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 to State of Washington one-way?

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

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

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

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

How can I find direct flights from London to Washington?

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

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

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Alternative routes for London to Washington

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Top 10 airlines flying from London to Washington

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Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.