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Find cheap flights from Washington to the United Kingdom from $246

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington to the United Kingdom departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
tir. 7/2
tir. 7/9

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In the last 7 days travelers have searched 42,335,261 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$246
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 36% increase in price.
Flight from Seattle to London Heathrow Airport

FAQs for booking flights from Washington to the United Kingdom

  • How does KAYAK find such low prices on flights from Washington to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United Kingdom from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to the United Kingdom with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to the United Kingdom from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Washington to the United Kingdom

Recent round-trip flight deals

10/15tir.
1 stop
13h 40mSEA-LTN
10/22tir.
1 stop
15h 01mLTN-SEA
$533
10/10tor.
1 stopIcelandair
12h 05mSEA-LHR
10/16ons.
1 stopIcelandair
28h 30mLHR-SEA
$544
10/8tir.
1 stopLufthansa
18h 40mSEA-LHR
10/15tir.
1 stopLufthansa
30h 20mLHR-SEA
$567
11/6ons.
1 stopLufthansa
12h 30mSEA-LHR
11/12tir.
1 stopLufthansa
14h 45mLHR-SEA
$575
10/15tir.
1 stopVirgin Atlantic
14h 45mSEA-LGW
10/22tir.
1 stopVirgin Atlantic
18h 20mLGW-SEA
$577
10/1tir.
2 stopsAmerican Airlines
20h 05mSEA-LGW
10/30ons.
2 stopsAmerican Airlines
33h 21mLGW-SEA
$581
10/1tir.
1 stopAir Canada
14h 50mSEA-LHR
10/8tir.
2 stopsAir Canada
17h 46mLHR-SEA
$582
10/2ons.
1 stopAir Canada
14h 05mSEA-LHR
10/8tir.
2 stopsAir Canada
17h 46mLHR-SEA
$588
11/6ons.
1 stopAmerican Airlines
15h 21mPDX-LHR
11/12tir.
nonstopAmerican Airlines
10h 10mLHR-PDX
$603
10/22tir.
1 stopVirgin Atlantic
14h 35mSEA-LCY
11/4man.
1 stopVirgin Atlantic
21h 30mLCY-SEA
$656

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Recent one-way flight deals

10/21man.
1 stopIcelandair
12h 05mSEA-LHR
$246
10/16ons.
1 stopIcelandair
12h 05mSEA-LHR
$247
10/15tir.
2 stops
18h 00mSEA-LGW
$257
10/18fre.
2 stops
28h 45mSEA-LHR
$272
11/20ons.
1 stopLufthansa
18h 40mSEA-LCY
$325
7/15man.
1 stopWestJet
19h 05mSEA-EDI
$333
7/10ons.
1 stopWestJet
19h 05mSEA-EDI
$334
11/18man.
1 stopLufthansa
17h 10mPDX-LHR
$337
9/24tir.
2 stopsAir Canada
16h 30mPDX-LHR
$435
6/7fre.
3 stopsAir Canada
33h 25mSEA-LHR
$462

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Search by airline

Search by price

Last minute flights from Washington to the United Kingdom

Last minute flight, train and bus deals

6/3man.
multi-stop
26h 50mSEA-LGW
6/10man.
multi-stop
28h 14mLGW-SEA
$836
6/3man.
multi-stop
21h 15mSEA-LHR
6/10man.
multi-stop
30h 19mLHR-SEA
$923
6/6tor.
multi-stopKLM
24h 50mPDX-EDI
6/11tir.
multi-stopKLM
14h 00mEDI-PDX
$1,044
6/6tor.
multi-stopBritish Airways
24h 05mSEA-EDI
6/12ons.
multi-stopBritish Airways
26h 45mEDI-SEA
$1,055
6/6tor.
multi-stopKLM
24h 50mPDX-EDI
6/12ons.
multi-stopKLM
18h 14mEDI-PDX
$1,125
6/6tor.
multi-stopBritish Airways
23h 13mSEA-EDI
6/12ons.
multi-stopBritish Airways
33h 08mEDI-SEA
$1,137
6/6tor.
multi-stopDelta
18h 06mPDX-EDI
6/11tir.
multi-stopDelta
14h 00mEDI-PDX
$1,137
6/6tor.
multi-stopDelta
18h 06mPDX-EDI
6/11tir.
multi-stopDelta
20h 51mEDI-PDX
$1,147
6/6tor.
multi-stopLufthansa
34h 40mPDX-EDI
6/12ons.
multi-stopLufthansa
41h 15mEDI-PDX
$1,174
6/7fre.
multi-stopLufthansa
36h 30mSEA-LHR
6/10man.
multi-stopLufthansa
21h 53mLHR-SEA
$1,195

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Flights to the United Kingdom

Return flight deals:

United Kingdom - Washington

Cabin classes:

$4,806
$3,208
$1,651
$596