Find Deals on Flights from London to Washington (LON - WAS)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from London to Washington

(Round-trip)
Depart: Sat Oct 29 2016 Return: Fri Nov 11 2016 Trip spans 14 days
Depart: Thu Sep 22 2016 Return: Wed Sep 28 2016 Trip spans 7 days
Depart: Thu May 26 2016 Return: Sun Jul 3 2016 Trip spans 39 days
Depart: Tue Aug 23 2016 Return: Tue Sep 6 2016 Trip spans 15 days
Depart: Tue Oct 25 2016 Return: Sun Oct 30 2016 Trip spans 6 days
Depart: Wed Nov 23 2016 Return: Sun Nov 27 2016 Trip spans 5 days
Depart: Mon Jun 13 2016 Return: Mon Jul 4 2016 Trip spans 22 days
Depart: Wed Jun 15 2016 Return: Tue Jul 26 2016 Trip spans 42 days
Depart: Mon Jun 6 2016 Return: Mon Jun 13 2016 Trip spans 8 days
Depart: Wed Nov 9 2016 Return: Thu Nov 24 2016 Trip spans 16 days
Depart: Mon Sep 19 2016 Return: Tue Sep 27 2016 Trip spans 9 days
Depart: Thu Nov 24 2016 Return: Wed Dec 7 2016 Trip spans 14 days
Depart: Fri Sep 23 2016 Return: Sun Sep 25 2016 Trip spans 3 days
Depart: Sun Sep 4 2016 Return: Sun Sep 11 2016 Trip spans 8 days
Depart: Sun Jul 24 2016 Return: Sun Aug 14 2016 Trip spans 22 days
Depart: Wed Aug 10 2016 Return: Tue Aug 16 2016 Trip spans 7 days
Depart: Sun Nov 20 2016 Return: Sun Dec 4 2016 Trip spans 15 days
Depart: Tue Oct 11 2016 Return: Tue Oct 25 2016 Trip spans 15 days
Depart: Wed Sep 28 2016 Return: Wed Oct 5 2016 Trip spans 8 days
Depart: Sat Jun 11 2016 Return: Tue Jun 28 2016 Trip spans 18 days
Direct flights LON to WAS on Delta
Flight # Depart LHR Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
4382 12:35 pm 3:50 pm May 24 - Oct 29
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

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Airports
Origin

London
only $596
only $682
only $542
Destination

Washington
only $542
only $736