Browse Origins:
Browse Destinations:

Find Flight Deals from Washington Dulles Intl to London (IAD - LON)

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

Book cheap flights from Washington Dulles Intl to London

(Round-trip)
Depart: Tue May 19 2015 Return: Wed May 20 2015 Trip spans 2 days
Multiple Airlines
Multiple Airlines
IAD
5:20a
LHR
12:55p
7h 35m
nonstop
LHR
3:00a
IAD
3:50p
12h 50m
1 stop
Depart: Thu Apr 23 2015 Return: Fri Apr 24 2015 Trip spans 2 days
Virgin Atlantic
Virgin Atlantic
IAD
2:00a
LHR
11:10a
9h 10m
1 stop
LHR
7:00a
IAD
3:15p
8h 15m
nonstop
Depart: Tue Apr 28 2015 Return: Thu Apr 30 2015 Trip spans 3 days
United
United
IAD
1:06p
LHR
10:30p
9h 24m
1 stop
LHR
3:20a
IAD
4:05p
12h 45m
1 stop
Depart: Wed Aug 26 2015 Return: Tue Sep 8 2015 Trip spans 14 days
Icelandair
Icelandair
IAD
4:35p
LGW
2:45a
10h 10m
1 stop
LGW
9:10a
IAD
8:10p
11h 00m
1 stop
Depart: Sat Apr 4 2015 Return: Sun Apr 5 2015 Trip spans 2 days
Lufthansa
Lufthansa
IAD
1:55p
LHR
9:20p
7h 25m
nonstop
LHR
6:55a
IAD
8:00p
13h 05m
1 stop
Depart: Tue Apr 7 2015 Return: Thu Apr 9 2015 Trip spans 3 days
KLM Royal Dutch
KLM Royal Dutch
IAD
1:24p
LHR
2:05a
12h 41m
1 stop
LHR
4:40a
IAD
4:30p
11h 50m
1 stop
Depart: Fri Apr 24 2015 Return: Sun Apr 26 2015 Trip spans 3 days
Delta
Delta
IAD
1:00p
LHR
12:25a
11h 25m
1 stop
LHR
4:40a
IAD
4:30p
11h 50m
1 stop
Depart: Sun Apr 12 2015 Return: Mon Apr 13 2015 Trip spans 2 days
Air France
Air France
IAD
2:50p
LHR
1:30a
10h 40m
1 stop
LHR
10:25a
IAD
10:12p
11h 47m
1 stop
Depart: Wed Apr 29 2015 Return: Wed May 6 2015 Trip spans 8 days
Multiple Airlines
Multiple Airlines
IAD
4:35p
LTN
5:10a
12h 35m
1 stop
LTN
3:35a
IAD
8:10p
16h 35m
1 stop
Depart: Sat Aug 22 2015 Return: Mon Aug 24 2015 Trip spans 3 days
KLM Royal Dutch
KLM Royal Dutch
IAD
1:15p
LCY
7:20a
18h 05m
2 stops
LCY
5:25a
IAD
4:30p
11h 05m
1 stop
Depart: Wed May 27 2015 Return: Fri Jun 5 2015 Trip spans 10 days
Icelandair
Icelandair
IAD
10:10a
LHR
11:10a
25h 00m
1 stop
LHR
9:00a
IAD
8:10p
11h 10m
1 stop
Depart: Thu Aug 13 2015 Return: Fri Sep 11 2015 Trip spans 30 days
Aeroflot
Aeroflot
IAD
11:00a
LHR
3:05a
16h 05m
1 stop
LHR
9:25a
IAD
1:55p
28h 30m
1 stop
Depart: Sat Apr 11 2015 Return: Tue Apr 14 2015 Trip spans 4 days
Brussels Airlines
Brussels Airlines
IAD
1:50p
LHR
1:15a
11h 25m
1 stop
LHR
2:50a
IAD
3:25p
12h 35m
1 stop
Depart: Mon Mar 16 2015 Return: Tue Apr 7 2015 Trip spans 23 days
Turkish Airlines
Turkish Airlines
IAD
8:30p
LHR
2:25a
29h 55m
1 stop
LHR
6:30p
IAD
7:10p
24h 40m
1 stop
Depart: Tue Mar 10 2015 Return: Tue Mar 24 2015 Trip spans 15 days
Turkish Airlines
Turkish Airlines
IAD
8:30p
LGW
2:55a
30h 25m
1 stop
LGW
8:40a
IAD
7:25p
34h 45m
1 stop
Depart: Wed Jun 17 2015 Return: Mon Jun 22 2015 Trip spans 6 days
Aer Lingus
Aer Lingus
IAD
1:20p
LGW
11:40p
10h 20m
1 stop
LGW
5:25a
IAD
4:35p
11h 10m
1 stop
Depart: Sat Mar 28 2015 Return: Tue Mar 31 2015 Trip spans 4 days
SAS
SAS
IAD
2:15p
LHR
4:05a
13h 50m
1 stop
LHR
4:30p
IAD
4:00p
23h 30m
1 stop
Depart: Thu Jul 2 2015 Return: Fri Jul 3 2015 Trip spans 2 days
$1038
Select
US Airways
US Airways
IAD
7:00a
LHR
1:50a
18h 50m
2 stops
LHR
5:05p
IAD
6:28p
25h 23m
2 stops
Depart: Tue Jun 30 2015 Return: Wed Jul 1 2015 Trip spans 2 days
$1044
Select
Air Canada
Air Canada
IAD
1:10p
LHR
10:30p
9h 20m
1 stop
LHR
8:35a
IAD
9:40p
13h 05m
1 stop
Change your search
Direct flights IAD to LON on Delta
Flight # Depart IAD Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
4383 6:55 pm 7:20 am Mar 29 - Apr 20
4383 7:00 pm 7:20 am Mar 28 - Mar 28
4383 8:15 pm 7:35 am Mar 8 - Mar 23
4383 8:15 pm 7:35 am Mar 24 - Mar 27
4383 10:35 pm 9:55 am Mar 12 - Mar 26
Airports
Origin

Washington
$723
Destination

London
only $723
only $793
only $802
only $727