$237 Find Cheap Flights from London to Washington - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Washington departing on 9/9. 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
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Book Cheap London to Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Washington that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Washington

Fri, Aug 14 - Sat, Aug 22
WestJet Logo
5:55 pm - 9:00 pm
YXU
-
SEA
30h 05m
1 stop
WestJet Logo
7:00 am - 4:45 pm
SEA
-
YXU
6h 45m
1 stop
$348WestJet
Tue, Aug 25 - Thu, Sep 10
WestJet Logo
8:40 pm - 9:40 am
YXU
-
SEA
16h 00m
1 stop
WestJet Logo
7:35 pm - 5:20 am
SEA
-
YXU
6h 45m
1 stop
$354WestJet
Thu, Sep 10 - Thu, Sep 17
WestJet Logo
5:55 pm - 9:40 am
YXU
-
SEA
18h 45m
1 stop
WestJet Logo
7:35 pm - 5:20 am
SEA
-
YXU
6h 45m
1 stop
$355WestJet
Sat, Aug 22 - Sun, Aug 23
WestJet Logo
6:10 am - 9:00 pm
YXU
-
SEA
17h 50m
1 stop
WestJet Logo
7:00 am - 4:45 pm
SEA
-
YXU
6h 45m
1 stop
$373WestJet
Thu, Sep 3 - Thu, Sep 10
WestJet Logo
8:40 pm - 9:40 am
YXU
-
SEA
16h 00m
1 stop
WestJet Logo
7:35 pm - 5:20 am
SEA
-
YXU
6h 45m
1 stop
$405WestJet
Sun, Aug 16 - Mon, Aug 24
WestJet Logo
5:55 pm - 6:45 pm
YXU
-
SEA
27h 50m
1 stop
WestJet Logo
7:00 am - 1:50 pm
SEA
-
YXU
27h 50m
2 stops
$443WestJet
Sat, Oct 17 - Wed, Oct 21
WestJet Logo
6:10 am - 6:45 pm
YXU
-
SEA
15h 35m
1 stop
WestJet Logo
7:35 pm - 5:20 am
SEA
-
YXU
6h 45m
1 stop
$445WestJet
Sat, Aug 22 - Sun, Aug 23
WestJet Logo
5:55 pm - 9:40 am
YXU
-
SEA
18h 45m
1 stop
WestJet Logo
7:35 pm - 1:50 pm
SEA
-
YXU
39h 15m
2 stops
$469WestJet
Thu, Sep 17 - Sat, Sep 19
WestJet Logo
5:55 pm - 9:40 am
YXU
-
SEA
18h 45m
1 stop
WestJet Logo
7:35 pm - 5:20 am
SEA
-
YXU
6h 45m
1 stop
$472WestJet
Thu, Sep 10 - Thu, Sep 17
Multiple Airlines Logo
6:10 am - 6:45 pm
YXU
-
SEA
15h 35m
1 stop
Multiple Airlines Logo
8:15 pm - 5:20 am
SEA
-
YXU
30h 05m
2 stops
$496Multiple Airlines
Booking Insights

KAYAK's insights & trends for London to Washington flights

Get data-powered insights and trends into flights from London to Washington to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from London to Washington?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from London to Washington were found on WestJet ($348) and United Airlines ($563).

Find deals

Good to know

Cheapest flight

$237
Flight from London to Seattle

FAQs - booking Washington flights

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

    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 London to Washington.

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

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

    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 from London to Washington with an airline and back with another airline.

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

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

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

Information on your arrival and departure airports

London (YXU)