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Find flight deals from United Kingdom to Washington Dulles

Flexible dates? Here are the best fares found in the past 48 hours...

Book cheap flights to Washington Dulles

(Round-trip)
Depart: Sat, 3 May, 2014 Return: Sun, 4 May, 2014 Trip spans 2 days
United
LHR
06:05
IAD
17:01
10h 56m
direct
IAD
05:25
LHR
12:55
7h 30m
direct
Depart: Fri, 14 Nov, 2014 Return: Tue, 18 Nov, 2014 Trip spans 5 days
United
MAN
07:00
IAD
15:25
8h 25m
direct
IAD
13:05
MAN
20:15
7h 10m
direct
Depart: Thu, 2 Oct, 2014 Return: Thu, 9 Oct, 2014 Trip spans 8 days
Icelandair
LGW
09:10
IAD
20:10
11h 00m
1 stop
IAD
16:35
LGW
02:45
10h 10m
1 stop
Depart: Fri, 14 Nov, 2014 Return: Tue, 18 Nov, 2014 Trip spans 5 days
Lufthansa
BHX
05:55
IAD
19:35
13h 40m
1 stop
IAD
16:55
BHX
06:30
13h 35m
1 stop
Depart: Wed, 22 Oct, 2014 Return: Tue, 6 Jan, 2015 Trip spans 77 days
Lufthansa
LHR
03:30
IAD
12:20
8h 50m
direct
IAD
17:00
LHR
00:15
7h 15m
direct
Depart: Tue, 9 Sep, 2014 Return: Tue, 30 Sep, 2014 Trip spans 22 days
Icelandair
LHR
09:00
IAD
20:10
11h 10m
1 stop
IAD
16:35
LHR
02:45
10h 10m
1 stop
Depart: Wed, 3 Sep, 2014 Return: Tue, 9 Sep, 2014 Trip spans 7 days
Icelandair
MAN
09:25
IAD
20:10
10h 45m
1 stop
IAD
16:35
MAN
02:35
10h 00m
1 stop
Depart: Fri, 14 Nov, 2014 Return: Wed, 19 Nov, 2014 Trip spans 6 days
Lufthansa
MAN
05:50
IAD
19:35
13h 45m
1 stop
IAD
12:20
MAN
00:05
11h 45m
1 stop
Depart: Sat, 22 Nov, 2014 Return: Sat, 29 Nov, 2014 Trip spans 8 days
Aer Lingus
LGW
01:50
IAD
15:15
13h 25m
1 stop
IAD
17:10
LGW
02:35
9h 25m
1 stop
Depart: Sat, 24 May, 2014 Return: Sat, 24 May, 2014 Trip spans 1 days
United
LHR
03:30
IAD
12:20
8h 50m
1 stop
IAD
17:50
LHR
12:20
18h 30m
1 stop
Depart: Tue, 2 Sep, 2014 Return: Thu, 11 Sep, 2014 Trip spans 10 days
Icelandair
LGW
09:10
IAD
20:10
11h 00m
1 stop
IAD
16:35
LGW
02:45
10h 10m
1 stop
Depart: Thu, 4 Sep, 2014 Return: Sat, 13 Sep, 2014 Trip spans 10 days
Icelandair
LGW
09:10
IAD
20:10
11h 00m
1 stop
IAD
16:35
LGW
02:45
10h 10m
1 stop
Depart: Fri, 5 Sep, 2014 Return: Sat, 13 Sep, 2014 Trip spans 9 days
Icelandair
LGW
09:10
IAD
20:10
11h 00m
1 stop
IAD
16:35
LGW
02:45
10h 10m
1 stop
Depart: Sat, 22 Nov, 2014 Return: Sun, 30 Nov, 2014 Trip spans 9 days
Icelandair
LHR
08:00
IAD
18:30
10h 30m
1 stop
IAD
14:45
LHR
02:00
11h 15m
1 stop
Depart: Thu, 23 Oct, 2014 Return: Sun, 2 Nov, 2014 Trip spans 11 days
Icelandair
LHR
09:00
IAD
20:10
11h 10m
1 stop
IAD
14:45
LHR
02:00
11h 15m
1 stop
Depart: Thu, 4 Sep, 2014 Return: Fri, 12 Sep, 2014 Trip spans 9 days
Icelandair
LHR
17:10
IAD
20:10
27h 00m
1 stop
IAD
16:35
LHR
11:10
18h 35m
1 stop
Depart: Fri, 12 Sep, 2014 Return: Tue, 30 Sep, 2014 Trip spans 19 days
Icelandair
LHR
09:00
IAD
20:10
11h 10m
1 stop
IAD
16:35
LHR
02:45
10h 10m
1 stop
Depart: Thu, 18 Sep, 2014 Return: Sun, 28 Sep, 2014 Trip spans 11 days
Icelandair
LHR
09:00
IAD
20:10
11h 10m
1 stop
IAD
16:35
LHR
02:45
10h 10m
1 stop
Change your search
Airports
Origin

Birmingham
£471
London
only £454
only £432
Manchester
£447
Destination

Washington
£432