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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 29 Oct 2015 Return: Sat 14 Nov 2015 Trip spans 17 days
£376
Select
Icelandair
Icelandair
LGW
08:30
IAD
19:30
11h 00m
1 stop
IAD
14:45
LGW
01:15
10h 30m
1 stop
Depart: Wed 23 Sep 2015 Return: Tue 20 Oct 2015 Trip spans 28 days
£383
Select
Icelandair
Icelandair
MAN
09:25
IAD
20:10
10h 45m
1 stop
IAD
16:35
MAN
02:35
10h 00m
1 stop
Depart: Fri 2 Oct 2015 Return: Tue 6 Oct 2015 Trip spans 5 days
£394
Select
Icelandair
Icelandair
LHR
09:00
IAD
20:10
11h 10m
1 stop
IAD
16:35
LHR
02:45
10h 10m
1 stop
Depart: Sat 19 Sep 2015 Return: Sun 20 Sep 2015 Trip spans 2 days
£457
Select
United
United
MAN
08:00
IAD
08:45
24h 45m
1 stop
IAD
13:50
MAN
01:15
11h 25m
1 stop
Depart: Wed 19 Aug 2015 Return: Wed 26 Aug 2015 Trip spans 8 days
£473
Select
SAS
SAS
NCL
15:20
IAD
16:00
24h 40m
1 stop
IAD
13:15
NCL
09:50
20h 35m
1 stop
Depart: Fri 25 Sep 2015 Return: Thu 1 Oct 2015 Trip spans 7 days
£475
Select
SAS
SAS
MAN
15:25
IAD
16:00
24h 35m
1 stop
IAD
13:15
MAN
00:35
11h 20m
1 stop
Depart: Sun 14 Jun 2015 Return: Fri 3 Jul 2015 Trip spans 20 days
£478
Select
Virgin Atlantic
Virgin Atlantic
MAN
07:15
IAD
19:45
12h 30m
1 stop
IAD
08:26
MAN
23:20
14h 54m
1 stop
Depart: Fri 5 Jun 2015 Return: Mon 8 Jun 2015 Trip spans 4 days
£480
Select
Brussels Airlines
Brussels Airlines
EDI
02:10
IAD
13:55
11h 45m
1 stop
IAD
13:50
EDI
05:55
16h 05m
1 stop
Depart: Wed 20 May 2015 Return: Wed 10 Jun 2015 Trip spans 22 days
£482
Select
SAS
SAS
LHR
16:30
IAD
16:00
23h 30m
1 stop
IAD
13:15
LHR
12:15
23h 00m
1 stop
Depart: Mon 4 May 2015 Return: Sun 24 May 2015 Trip spans 21 days
£488
Select
Aer Lingus
Aer Lingus
BHX
04:10
IAD
16:35
12h 25m
1 stop
IAD
13:20
BHX
22:35
9h 15m
1 stop
Depart: Thu 14 May 2015 Return: Thu 21 May 2015 Trip spans 8 days
£488
Select
Brussels Airlines
Brussels Airlines
BHX
02:10
IAD
15:25
13h 15m
1 stop
IAD
13:50
BHX
04:35
14h 45m
1 stop
Depart: Sat 3 Oct 2015 Return: Tue 13 Oct 2015 Trip spans 11 days
£490
Select
Finnair
Finnair
GLA
10:25
IAD
14:45
28h 20m
1 stop
IAD
18:25
GLA
04:15
9h 50m
1 stop
Depart: Wed 28 Oct 2015 Return: Tue 3 Nov 2015 Trip spans 7 days
£491
Select
Lufthansa
Lufthansa
EDI
02:00
IAD
14:55
12h 55m
1 stop
IAD
12:50
EDI
05:05
16h 15m
1 stop
Depart: Wed 13 May 2015 Return: Mon 18 May 2015 Trip spans 6 days
£492
Select
Lufthansa
Lufthansa
MAN
02:10
IAD
16:55
14h 45m
1 stop
IAD
14:25
MAN
21:55
7h 30m
nonstop
Depart: Mon 18 May 2015 Return: Wed 27 May 2015 Trip spans 10 days
£501
Select
Delta
Delta
MAN
06:35
IAD
21:49
15h 14m
1 stop
IAD
02:00
MAN
00:55
22h 55m
1 stop
Depart: Fri 12 Jun 2015 Return: Sat 13 Jun 2015 Trip spans 2 days
£503
Select
United
United
BHX
05:00
IAD
08:22
27h 22m
2 stops
IAD
15:55
BHX
22:10
30h 15m
1 stop
Depart: Tue 19 May 2015 Return: Sun 24 May 2015 Trip spans 6 days
£505
Select
Aer Lingus
Aer Lingus
NCL
15:10
IAD
16:35
25h 25m
1 stop
IAD
13:20
NCL
23:05
9h 45m
1 stop
Depart: Wed 30 Sep 2015 Return: Sat 10 Oct 2015 Trip spans 11 days
£513
Select
British Airways
British Airways
GLA
10:35
IAD
21:25
10h 50m
1 stop
IAD
18:25
GLA
04:15
9h 50m
1 stop
Depart: Fri 16 Oct 2015 Return: Sun 18 Oct 2015 Trip spans 3 days
£569
Select
United
United
BHD
08:40
IAD
12:22
27h 42m
2 stops
IAD
05:25
BHD
02:10
20h 45m
1 stop
Depart: Fri 1 May 2015 Return: Mon 4 May 2015 Trip spans 4 days
£618
Select
Aer Lingus
Aer Lingus
LCY
02:50
IAD
16:25
13h 35m
1 stop
IAD
13:20
LCY
01:00
11h 40m
1 stop
Airports
Origin

Belfast
£569
London
only £394
only £618
only £376
Manchester
£383
Newcastle upon Tyne
£473
Glasgow
£490
Edinburgh
£480
Birmingham
£488
Destination

Washington
£376