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

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 Heathrow Airport.

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

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

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 Heathrow Airport 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 Heathrow Airport?

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

$335 CHEAP FLIGHTS from Washington to London Heathrow (LHR)

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Cheap Flights from Washington to London

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Washington to London

Sun, Oct 11 - Tue, Oct 27

1:59 pm - 1:05 pmGEG Spokane-LHR London Heathrow

15h 06m1 stop Minneapolis St Paul

9:50 am - 8:08 pmLHR London Heathrow-GEG Spokane

17h 18m1 stop Minneapolis St Paul

$744KLM

Tue, Dec 1 - Tue, Dec 8

4:27 pm - 4:30 pmGEG Spokane-LHR London Heathrow

16h 03m1 stop Los Angeles

6:30 am - 6:59 pmLHR London Heathrow-GEG Spokane

20h 29m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$746Delta

Wed, Nov 18 - Wed, Nov 25

4:25 pm - 4:30 pmGEG Spokane-LHR London Heathrow

16h 05m1 stop Los Angeles

8:40 am - 8:09 pmLHR London Heathrow-GEG Spokane

19h 29m2 stops Amsterdam Schiphol Minneapolis St Paul

$746Delta

Tue, Mar 2 - Fri, Mar 5

4:00 pm - 9:40 amGEG Spokane-LHR London Heathrow

33h 40m1 stop Denver Intl

9:00 am - 11:38 pmLHR London Heathrow-GEG Spokane

22h 38m2 stops Zurich San Francisco

$751United Airlines

Sun, Oct 11 - Tue, Oct 27

6:22 am - 10:15 amGEG Spokane-LHR London Heathrow

19h 53m1 stop Los Angeles

4:35 pm - 11:44 pmLHR London Heathrow-GEG Spokane

38h 09m2 stops New York John F Kennedy Intl Salt Lake City

$752Virgin Atlantic

Tue, Mar 2 - Fri, Mar 5

12:30 pm - 7:25 amGEG Spokane-LHR London Heathrow

34h 55m1 stop San Francisco

6:35 am - 11:38 pmLHR London Heathrow-GEG Spokane

25h 03m2 stops Munich Franz Josef Strauss San Francisco

$754United Airlines

Tue, Dec 1 - Tue, Dec 8

6:45 am - 7:05 amGEG Spokane-LHR London Heathrow

16h 20m1 stop Minneapolis St Paul

9:50 am - 8:18 pmLHR London Heathrow-GEG Spokane

18h 28m1 stop Minneapolis St Paul

$754Air France

Tue, Nov 10 - Tue, Nov 24

6:25 am - 7:05 amGEG Spokane-LHR London Heathrow

16h 40m1 stop Minneapolis St Paul

10:55 am - 11:20 pmLHR London Heathrow-GEG Spokane

20h 25m1 stop Los Angeles

$754Air France

Tue, Nov 10 - Thu, Nov 12

9:45 am - 6:50 amSEA Seattle/Tacoma Intl-LHR London Heathrow

13h 05m1 stop Detroit Metropolitan Wayne County

6:30 am - 11:47 amLHR London Heathrow-SEA Seattle/Tacoma Intl

13h 17m1 stop Amsterdam Schiphol

$771KLM

Fri, Nov 6 - Fri, Nov 13

7:05 am - 7:05 amPSC Pasco Tri Cities-LHR London Heathrow

16h 00m1 stop Minneapolis St Paul

6:20 am - 11:59 pmLHR London Heathrow-PSC Pasco Tri Cities

25h 39m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

$797Virgin Atlantic

Recent last minute flight deals from Washington to London

Wed, Sep 30 - Thu, Oct 15

1:00 pm - 11:20 amGEG Spokane-LHR London Heathrow

14h 20m1 stop Seattle/Tacoma Intl

6:30 am - 4:58 pmLHR London Heathrow-GEG Spokane

18h 28m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$747Delta

Wed, Sep 30 - Fri, Oct 16

4:19 pm - 5:35 pmGEG Spokane-LHR London Heathrow

17h 16m1 stop Los Angeles

2:30 pm - 11:59 pmLHR London Heathrow-GEG Spokane

17h 29m1 stop Los Angeles

$753Virgin Atlantic

Wed, Sep 30 - Thu, Oct 15

4:19 pm - 5:35 pmGEG Spokane-LHR London Heathrow

17h 16m1 stop Los Angeles

10:55 am - 6:29 pmLHR London Heathrow-GEG Spokane

15h 34m1 stop Salt Lake City

$753Virgin Atlantic

Mon, Sep 28 - Tue, Oct 13

10:50 am - 11:50 amSEA Seattle/Tacoma Intl-LHR London Heathrow

17h 00m2 stops Vancouver Intl Toronto Pearson Intl

10:15 am - 6:32 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

16h 17m2 stops Calgary Vancouver Intl

$771Air Canada

Fri, Oct 2 - Tue, Oct 20

3:00 pm - 9:00 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

22h 00m2 stops Vancouver Intl Halifax Intl

6:55 am - 4:59 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

18h 04m1 stop Munich Franz Josef Strauss

$772Multiple Airlines

Thu, Oct 1 - Fri, Oct 30

9:40 pm - 3:05 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 25mnonstop

2:45 pm - 6:05 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 20mnonstop

$779Alaska Airlines

Tue, Sep 29 - Mon, Oct 5

9:40 pm - 3:05 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 25mnonstop

5:00 pm - 7:00 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 00mnonstop

$779Alaska Airlines

Mon, Sep 28 - Sun, Oct 4

9:50 pm - 3:35 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 45mnonstop

6:30 pm - 8:55 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 25mnonstop

$779Delta

Thu, Oct 1 - Tue, Oct 20

1:40 pm - 10:50 amSEA Seattle/Tacoma Intl-LHR London Heathrow

13h 10m1 stop Chicago O'Hare Intl

9:50 am - 11:35 amLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 45mnonstop

$783American Airlines

Fri, Oct 2 - Tue, Oct 20

1:40 pm - 11:15 amSEA Seattle/Tacoma Intl-LHR London Heathrow

13h 35m1 stop Chicago O'Hare Intl

9:50 am - 11:35 amLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 45mnonstop

$784American Airlines

Recent direct flight deals from Washington to London

Sat, Jan 23 - Fri, Feb 5

1:40 pm - 7:10 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 30mnonstop

2:55 pm - 4:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 55mnonstop

$772British Airways

Thu, Mar 18 - Wed, Mar 24

2:40 pm - 7:10 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 30mnonstop

2:55 pm - 5:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 55mnonstop

$772British Airways

Thu, Nov 19 - Tue, Nov 24

1:40 pm - 7:10 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 30mnonstop

2:55 pm - 4:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 55mnonstop

$774Iberia

Fri, Nov 27 - Thu, Dec 10

4:50 pm - 10:40 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 50mnonstop

12:20 pm - 2:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 30mnonstop

$779Delta

Sat, Nov 28 - Wed, Dec 9

4:50 pm - 10:40 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 50mnonstop

12:20 pm - 2:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 30mnonstop

$779Delta

Fri, Nov 13 - Wed, Nov 18

6:45 pm - 12:10 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 25mnonstop

2:55 pm - 4:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 55mnonstop

$779American Airlines

Fri, Oct 16 - Tue, Oct 20

1:30 pm - 6:45 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 15mnonstop

9:50 am - 11:35 amLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 45mnonstop

$779American Airlines

Thu, Nov 5 - Tue, Nov 17

4:50 pm - 10:40 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 50mnonstop

12:20 pm - 2:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 30mnonstop

$779KLM

Wed, Nov 4 - Sun, Nov 15

4:50 pm - 10:40 amSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 50mnonstop

12:20 pm - 2:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

10h 30mnonstop

$779KLM

Tue, Jan 12 - Mon, Jan 18

6:45 pm - 12:10 pmSEA Seattle/Tacoma Intl-LHR London Heathrow

9h 25mnonstop

2:55 pm - 4:50 pmLHR London Heathrow-SEA Seattle/Tacoma Intl

9h 55mnonstop

$786Iberia

Useful Info

Low season	January
High season	July
Cheapest flight	$335

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 24% increase in price.

Flight from Spokane to London Heathrow Airport

MichaelFlew with Delta-May 2026

We like Delta, Alaska and American. Be prepared for a bit of a trek from your arrival gate to Customs and outside services. Heathrow doesn't rank high on my list of major airports.

Verified travelerFlew with American Airlines-Apr 2026

Heathrow is too gigantic to have less than 2 hours of layover time.

Verified travelerFlew with British Airways-Apr 2025

Make sure you have plenty of time between flights if you are delayed.

Verified travelerFlew with British Airways-Feb 2025

Don’t take a flight if you sick, or if you have no choice prepare to stay covered with mask throughout the flight

Verified travelerFlew with British Airways-Apr 2024

Bring a sack lunch -- airport food was very expensive.

How does KAYAK find such low prices on flights from Washington to London Heathrow Airport?
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 Heathrow Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to London Heathrow Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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$335 Find Cheap Flights from Washington to London Heathrow Airport - Compare and Save

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