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

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from London to Washington

(Round-trip)
Depart: Thu Sep 24 2015 Return: Fri Oct 16 2015 Trip spans 23 days
Icelandair
Icelandair
LGW
9:10a
IAD
8:10p
11h 00m
1 stop
IAD
4:35p
LGW
2:35a
10h 00m
1 stop
Depart: Thu Oct 1 2015 Return: Sun Oct 4 2015 Trip spans 4 days
Icelandair
Icelandair
LHR
5:10p
IAD
8:10p
27h 00m
1 stop
IAD
4:35p
LHR
2:45a
10h 10m
1 stop
Depart: Thu Oct 29 2015 Return: Mon Nov 2 2015 Trip spans 5 days
Delta
Delta
LHR
6:55a
IAD
3:20p
8h 25m
nonstop
IAD
12:20p
LHR
10:45p
10h 25m
1 stop
Depart: Mon Jan 4 2016 Return: Sun Jan 10 2016 Trip spans 7 days
Delta
Delta
LHR
9:25a
DCA
11:02p
13h 37m
1 stop
DCA
7:05a
LHR
9:20p
14h 15m
1 stop
Depart: Sat Dec 19 2015 Return: Mon Dec 28 2015 Trip spans 10 days
Aer Lingus
Aer Lingus
LHR
1:50a
IAD
3:25p
13h 35m
1 stop
IAD
12:20p
LHR
10:05p
9h 45m
1 stop
Depart: Sat Aug 22 2015 Return: Sun Aug 23 2015 Trip spans 2 days
United
United
LHR
12:20p
IAD
8:40p
8h 20m
nonstop
IAD
8:36a
LHR
9:45p
13h 09m
1 stop
Depart: Mon Oct 5 2015 Return: Mon Oct 19 2015 Trip spans 15 days
SAS
SAS
LHR
2:40a
IAD
4:00p
13h 20m
1 stop
IAD
1:15p
LHR
8:00a
18h 45m
1 stop
Depart: Wed Oct 7 2015 Return: Wed Oct 21 2015 Trip spans 15 days
Aer Lingus
Aer Lingus
LGW
5:10a
IAD
4:35p
11h 25m
1 stop
IAD
1:20p
LGW
11:25p
10h 05m
1 stop
Depart: Fri Aug 21 2015 Return: Mon Aug 31 2015 Trip spans 11 days
American Airlines
American Airlines
LHR
8:50a
DCA
12:01a
15h 11m
1 stop
DCA
8:26a
LHR
9:55p
13h 29m
1 stop
Depart: Sun Aug 23 2015 Return: Tue Sep 1 2015 Trip spans 10 days
KLM Royal Dutch
KLM Royal Dutch
LHR
10:25a
DCA
10:26p
12h 01m
1 stop
DCA
11:02a
LHR
11:45p
12h 43m
1 stop
Depart: Sun Dec 20 2015 Return: Mon Jan 11 2016 Trip spans 23 days
Aeroflot
Aeroflot
LHR
5:30p
IAD
12:20p
18h 50m
1 stop
IAD
9:05a
LHR
2:15a
17h 10m
1 stop
Depart: Fri Aug 7 2015 Return: Thu Aug 13 2015 Trip spans 7 days
$1154
Select
Aeromexico
Aeromexico
LHR
6:35p
IAD
12:57a
30h 22m
1 stop
IAD
9:12p
LHR
3:05a
29h 53m
1 stop
Depart: Thu Jul 9 2015 Return: Sun Aug 9 2015 Trip spans 32 days
$1225
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Aeroflot
Aeroflot
LHR
9:25a
DCA
11:30p
38h 05m
2 stops
DCA
2:07a
LHR
3:05a
24h 58m
2 stops
Depart: Tue Jul 7 2015 Return: Mon Aug 10 2015 Trip spans 35 days
$1573
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Alitalia
Alitalia
LHR
2:45a
DCA
11:30p
20h 45m
2 stops
DCA
2:04p
LHR
6:20a
16h 16m
2 stops
Direct flights LON to WAS on Delta
Flight # Depart LHR Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
4382 11:00 am 2:15 pm Jun 27 - Sep 10
4382 11:00 am 2:15 pm Jun 29 - Sep 11
Airports
Origin

London
only $642
only $620
Destination

Washington
only $620
only $704