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Cheap flights from the United Kingdom to Washington from £247

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
3 Apr — 10 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Washington

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Washington
Explore the most affordable flight options available from United Kingdom to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 March 2026.

Wed 15/413:05
MAN
-
SEA
1 stop12h 50m
Icelandair
Mon 27/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£361
Tue 14/413:05
MAN
-
SEA
1 stop15h 35m
Icelandair
Mon 27/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£362
Wed 15/413:05
MAN
-
SEA
1 stop12h 50m
Icelandair
Sat 25/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£380
Tue 14/413:05
MAN
-
SEA
1 stop15h 35m
Icelandair
Sun 26/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£381
Thu 9/413:05
MAN
-
SEA
1 stop12h 50m
Icelandair
Wed 29/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£393
Thu 9/413:05
MAN
-
SEA
1 stop15h 35m
Icelandair
Mon 27/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£393
Wed 15/413:05
MAN
-
SEA
1 stop12h 50m
Icelandair
Thu 23/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£396
Tue 14/413:05
MAN
-
SEA
1 stop15h 35m
Icelandair
Thu 23/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£396
Sat 9/509:30
LHR
-
SEA
2 stops33h 13m
United Airlines
Sun 10/518:50
SEA
-
LHR
1 stop16h 50m
United Airlines
Deal found 3/3£396
Thu 9/413:05
MAN
-
SEA
1 stop12h 50m
Icelandair
Sat 25/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£411
Tue 14/406:30
STN
-
SEA
2 stops22h 10m
Multiple Airlines
Tue 21/415:40
SEA
-
STN
2 stops23h 40m
Multiple Airlines
Deal found 28/2£411
Thu 9/413:05
MAN
-
SEA
1 stop15h 35m
Icelandair
Sun 26/415:40
SEA
-
MAN
1 stop12h 00m
Icelandair
Deal found 3/3£412

Find flight deals from United Kingdom to Washington

Keep the following information in mind while searching for United Kingdom to Washington flight deals. Data was last updated 4 March 2026.

Round-trip from

£361

One-way from

£216

Popular in

July

Cheapest in

February

Average price

£520

Good round-trip deal

£536 or less

Good one-way deal

£477 or less
Icelandair
  • Icelandair
  • 15/4-27/4
  • 2 total stops
  • 24h 50m total
  • United Kingdom to Washington
Search Deals
5/6
  • 5/6
  • 1 total stop
  • 36h 02m total
  • United Kingdom to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£57 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 March 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington.
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 4 March 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 16/4

09:25-20:40

2 stops19h 15m

Seattle/Tacoma Intl

Thu 23/4

15:40-16:45

2 stops17h 05m

£498

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 15/4

10:50-16:59

1 stop14h 09m

Seattle/Tacoma Intl

Wed 22/4

05:00-07:15

2 stops18h 15m

£540

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 14/4

09:25-22:42

2 stops21h 17m

Seattle/Tacoma Intl

Tue 21/4

10:48-08:25

2 stops37h 37m

£568

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/5

15:05-22:20

1 stop15h 15m

Seattle/Tacoma Intl

Fri 15/5

22:53-06:45

1 stop23h 52m

£590

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 17/4

06:05-22:50

3 stops24h 45m

Seattle/Tacoma Intl

Fri 24/4

19:00-16:20

2 stops13h 20m

£596

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Sun 17/5

13:05-17:55

1 stop12h 50m

Seattle/Tacoma Intl

Wed 27/5

23:25-11:40

1 stop28h 15m

£602

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 31/8

10:00-23:54

1 stop21h 54m

Portland

Sun 6/9

17:40-10:55

1 stop33h 15m

£604

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 20/4

07:30-17:45

2 stops18h 15m

Portland

Wed 13/5

19:05-20:40

2 stops17h 35m

£612

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 11/6

09:25-21:08

2 stops19h 43m

Seattle/Tacoma Intl

Sun 5/7

15:40-21:40

3 stops22h 00m

£614

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 13/4

07:25-18:34

2 stops19h 09m

Portland

Mon 20/4

12:50-12:20

1 stop15h 30m

£614

Flights are sorted by cheapest return flights first.

Deals found on 27/2

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from United Kingdom to Washington

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

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £351). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £470). 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 GB to WA?

Find hourly flight availability from United Kingdom 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 4 March 2026.

When flying from United Kingdom 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.

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 4 March 2026.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAir France from the United Kingdom 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
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,461 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
680 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Air France
7.4
Good
1,542 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.1
Good
617 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,774 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom to State of Washington?

    Icelandair, United Airlines, and SWISS can get you from United Kingdom to State of Washington in just under 14h 09m. Your travel time can differ by up to 17h 06m. There are 4783 mi between United Kingdom and State of Washington. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from United Kingdom to Washington?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to State of Washington (average of £351). Flying from United Kingdom to State of Washington in August is currently the most expensive (average of £470). 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

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Alternative routes for United Kingdom to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from United Kingdom to Washington

Discover the top 10 airlines that operate flights from United Kingdom 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 4 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£337Average£586FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£343Average£538FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£364Average£583FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£423Average£501FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£425Average£618FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£432Average£685FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£444Average£643FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£452Average£775FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air FranceCheapest£453Average£742FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£464Average£625FlexibilityNo cancel feeOn-time76%
Search Finnair 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 United Kingdom to Washington?

Cheapflights helps you search for flights from United Kingdom to Washington via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Washington.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from United Kingdom to Washington flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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