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Find flight deals from United Kingdom to Washington Dulles Intl

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

Book cheap flights to Washington Dulles Intl

(Round-trip)
Depart: Thu 23 Apr 2015 Return: Thu 7 May 2015 Trip spans 15 days
£399
Select
Icelandair
Icelandair
LGW
09:10
IAD
20:10
11h 00m
1 stop
IAD
16:35
LGW
02:45
10h 10m
1 stop
Depart: Mon 2 Mar 2015 Return: Mon 6 Apr 2015 Trip spans 35 days
£417
Select
Air France
Air France
BHX
04:20
IAD
16:20
12h 00m
1 stop
IAD
14:50
BHX
06:55
16h 05m
1 stop
Depart: Mon 27 Apr 2015 Return: Tue 26 May 2015 Trip spans 30 days
£418
Select
Icelandair
Icelandair
LHR
17:10
IAD
20:10
27h 00m
1 stop
IAD
10:10
LHR
11:10
25h 00m
1 stop
Depart: Thu 19 Mar 2015 Return: Mon 23 Mar 2015 Trip spans 5 days
£419
Select
Multiple Airlines
Multiple Airlines
LHR
04:40
IAD
16:30
11h 50m
1 stop
IAD
15:50
LHR
05:45
13h 55m
1 stop
Depart: Wed 29 Apr 2015 Return: Sun 17 May 2015 Trip spans 19 days
£419
Select
Icelandair
Icelandair
MAN
09:25
IAD
20:10
10h 45m
1 stop
IAD
10:10
MAN
02:35
16h 25m
1 stop
Depart: Thu 5 Feb 2015 Return: Mon 9 Feb 2015 Trip spans 5 days
£427
Select
Lufthansa
Lufthansa
MAN
01:15
IAD
15:55
14h 40m
1 stop
IAD
13:05
MAN
01:20
12h 15m
1 stop
Depart: Mon 2 Feb 2015 Return: Tue 17 Feb 2015 Trip spans 16 days
£429
Select
Delta
Delta
MAN
01:45
IAD
15:00
13h 15m
1 stop
IAD
12:04
MAN
03:25
15h 21m
2 stops
Depart: Sun 22 Mar 2015 Return: Mon 30 Mar 2015 Trip spans 9 days
£431
Select
Multiple Airlines
Multiple Airlines
LCY
12:50
IAD
16:30
27h 40m
1 stop
IAD
13:45
LCY
23:55
10h 10m
1 stop
Depart: Sun 29 Mar 2015 Return: Mon 13 Apr 2015 Trip spans 16 days
£445
Select
Aeroflot
Aeroflot
LHR
18:45
IAD
13:50
19h 05m
1 stop
IAD
10:50
LHR
03:05
16h 15m
1 stop
Depart: Sat 28 Feb 2015 Return: Mon 6 Apr 2015 Trip spans 37 days
£448
Select
Multiple Airlines
Multiple Airlines
BHX
01:00
IAD
15:35
14h 35m
1 stop
IAD
14:50
BHX
10:00
19h 10m
1 stop
Depart: Mon 16 Feb 2015 Return: Wed 18 Mar 2015 Trip spans 30 days
£448
Select
British Airways
British Airways
MAN
03:50
IAD
14:25
10h 35m
1 stop
IAD
19:20
MAN
04:55
9h 35m
1 stop
Depart: Tue 24 Mar 2015 Return: Wed 8 Apr 2015 Trip spans 16 days
£451
Select
Delta
Delta
LHR
02:30
IAD
16:30
14h 00m
1 stop
IAD
14:50
LHR
01:30
10h 40m
1 stop
Depart: Tue 10 Feb 2015 Return: Tue 24 Feb 2015 Trip spans 15 days
£456
Select
United
United
LHR
03:40
IAD
17:37
13h 57m
1 stop
IAD
03:16
LHR
23:25
20h 09m
1 stop
Depart: Sat 14 Feb 2015 Return: Wed 18 Feb 2015 Trip spans 5 days
£462
Select
Multiple Airlines
Multiple Airlines
MAN
12:20
IAD
15:35
27h 15m
1 stop
IAD
13:50
MAN
01:00
11h 10m
1 stop
Depart: Wed 18 Feb 2015 Return: Mon 23 Feb 2015 Trip spans 6 days
£470
Select
British Airways
British Airways
GLA
08:50
IAD
20:15
11h 25m
1 stop
IAD
13:30
GLA
23:10
9h 40m
1 stop
Depart: Sat 28 Mar 2015 Return: Sun 12 Apr 2015 Trip spans 16 days
£478
Select
Brussels Airlines
Brussels Airlines
MAN
06:40
IAD
12:55
30h 15m
1 stop
IAD
13:50
MAN
08:15
18h 25m
1 stop
Depart: Fri 13 Mar 2015 Return: Sat 21 Mar 2015 Trip spans 9 days
£488
Select
SAS
SAS
LHR
02:40
IAD
16:15
13h 35m
1 stop
IAD
14:15
LHR
05:05
14h 50m
1 stop
Depart: Sat 31 Jan 2015 Return: Tue 3 Feb 2015 Trip spans 4 days
£496
Select
Air France
Air France
LHR
15:10
IAD
16:20
25h 10m
1 stop
IAD
13:50
LHR
00:25
10h 35m
1 stop
Depart: Tue 19 May 2015 Return: Tue 26 May 2015 Trip spans 8 days
£529
Select
Turkish Airlines
Turkish Airlines
LGW
08:35
IAD
19:10
34h 35m
1 stop
IAD
19:25
LGW
01:50
30h 25m
1 stop
Depart: Wed 1 Apr 2015 Return: Mon 13 Apr 2015 Trip spans 13 days
£532
Select
SAS
SAS
MAN
15:25
IAD
16:00
24h 35m
1 stop
IAD
13:15
MAN
00:35
11h 20m
1 stop
Change your search
Airports
Origin

London
only £418
only £431
only £399
Manchester
£419
Glasgow
£470
Birmingham
£417
Destination

Washington
£399