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$241 Find cheap flights from Washington to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 11/11. 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
Mon 7/1
Mon 7/8

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In the last 7 days travelers have searched 42,787,818 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$241
Best time to beat the crowds with an average 17% 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 London

  • How does KAYAK find such low prices on flights from Washington to London?

    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 London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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 London?

    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 London 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 London?

    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 London from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Washington to London?

Find which airlines fly direct from Washington to London, which days they fly and book direct flights.

Nonstop departures

Washington to London

Monday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

See more direct flights

Nonstop returns

London to Washington

Monday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

See more direct flights
See more direct flights

Book cheap flights from Washington to London

Recent round-trip flight deals

10/15Tue
1 stopLufthansa
14h 10mSEA-LHR
10/29Tue
1 stopLufthansa
13h 40mLHR-SEA
$553
10/9Wed
1 stopIcelandair
12h 35mPDX-LHR
10/15Tue
1 stopIcelandair
12h 50mLHR-PDX
$561
11/7Thu
1 stop
33h 50mPDX-LHR
11/10Sun
2 stops
16h 36mLHR-PDX
$581
10/1Tue
2 stopsAir Canada
16h 30mPDX-LHR
10/8Tue
2 stopsAir Canada
17h 37mLHR-PDX
$582
10/1Tue
1 stopAir Canada
18h 20mSEA-LHR
10/8Tue
2 stopsAir Canada
17h 46mLHR-SEA
$582
10/6Sun
1 stop
14h 10mSEA-LHR
10/24Thu
2 stops
17h 46mLHR-SEA
$583
11/27Wed
1 stopUnited Airlines
22h 00mSEA-LHR
12/4Wed
2 stopsUnited Airlines
30h 15mLHR-SEA
$587
9/24Tue
1 stopUnited Airlines
13h 30mSEA-LHR
10/25Fri
1 stopUnited Airlines
14h 09mLHR-SEA
$589
10/8Tue
nonstopDelta
9h 20mSEA-LHR
10/24Thu
1 stopDelta
13h 05mLHR-SEA
$592
9/24Tue
nonstopDelta
9h 20mSEA-LHR
10/25Fri
1 stopDelta
13h 05mLHR-SEA
$594

Search by stops

Search by airline

Search by price

Recent one-way flight deals

11/11Mon
1 stopIcelandair
20h 45mSEA-LHR
$241
9/29Sun
1 stopIcelandair
11h 55mSEA-LGW
$246
10/22Tue
2 stops
16h 30mSEA-STN
$255
9/3Tue
3 stops
19h 25mSEA-LHR
$255
10/22Tue
1 stopLufthansa
14h 10mSEA-LHR
$271
10/22Tue
1 stopLufthansa
18h 10mSEA-LCY
$325
10/6Sun
2 stopsWestJet
36h 25mSEA-LHR
$348
11/9Sat
2 stopsWestJet
21h 25mSEA-LHR
$370
7/6Sat
1 stopAir Canada
34h 55mSEA-LHR
$407
9/24Tue
2 stopsAir Canada
16h 30mPDX-LHR
$435

Search by stops

Search by airline

Search by price

Last minute flights from Washington to London

Last minute flight, train and bus deals

6/4Tue
multi-stopAir Canada
22h 31mGEG-LHR
6/13Thu
multi-stopAir Canada
45h 08mLHR-GEG
$766
6/4Tue
multi-stopUnited Airlines
26h 01mGEG-LHR
6/13Thu
multi-stopUnited Airlines
22h 00mLHR-GEG
$788
6/5Wed
multi-stop
25h 30mSEA-LGW
6/13Thu
multi-stop
34h 00mLGW-SEA
$904
6/3Mon
multi-stop
13h 55mPDX-LHR
6/17Mon
multi-stop
19h 20mLHR-PDX
$927
6/3Mon
multi-stopAmerican Airlines
15h 25mPDX-LHR
6/17Mon
nonstopAmerican Airlines
9h 55mLHR-PDX
$930
6/3Mon
multi-stopAmerican Airlines
15h 25mPDX-LHR
6/17Mon
multi-stopAmerican Airlines
18h 42mLHR-PDX
$939
6/3Mon
multi-stopDelta
15h 35mPDX-LHR
6/17Mon
multi-stopDelta
13h 30mLHR-PDX
$1,007
6/3Mon
multi-stopDelta
15h 55mPDX-LHR
6/17Mon
multi-stopDelta
17h 59mLHR-PDX
$1,015
6/1Sat
multi-stopIberia
34h 51mPDX-LHR
6/14Fri
nonstopIberia
9h 55mLHR-PDX
$1,044
6/1Sat
nonstopIberia
9h 30mPDX-LHR
6/14Fri
nonstopIberia
9h 55mLHR-PDX
$2,167

Search by stops

Search by airline

Search by price

Flights to London

Return flight deals:

London - Washington

Cabin classes:

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