Find Cheap Flights to Belfast

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Washington Dulles Intl to Belfast

(Round-trip)
Depart: Fri Nov 3 2017 Return: Sun Nov 12 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
BFS
12:40p
12h 40m
1 stop
BFS
12:00a
IAD
7:45a
31h 45m
1 stop
Depart: Fri Sep 22 2017 Return: Sun Sep 24 2017 Trip spans 3 days
United
United
IAD
12:00a
BFS
1:05p
13h 05m
1 stop
BFS
12:00a
IAD
4:15p
16h 15m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
Air France
Air France
IAD
12:00a
BFS
2:10p
14h 10m
2 stops
BFS
12:00a
IAD
1:35p
13h 35m
2 stops
Depart: Thu Sep 28 2017 Return: Sun Oct 1 2017 Trip spans 4 days
British Airways
British Airways
IAD
12:00a
BFS
11:15a
11h 15m
1 stop
BFS
12:00a
IAD
9:40p
21h 40m
1 stop
Depart: Sat Oct 21 2017 Return: Thu Oct 26 2017 Trip spans 6 days
Icelandair
Icelandair
IAD
12:00a
BFS
10:05a
10h 05m
1 stop
BFS
12:00a
IAD
10:30a
10h 30m
1 stop
Depart: Wed Sep 27 2017 Return: Sat Sep 30 2017 Trip spans 4 days
American Airlines
American Airlines
IAD
12:00a
BFS
11:00a
11h 00m
1 stop
BFS
12:00a
IAD
2:30a
26h 30m
1 stop
Depart: Sun Nov 12 2017 Return: Tue Nov 21 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
BFS
12:40p
12h 40m
1 stop
BFS
12:00a
IAD
12:00p
12h 00m
1 stop
Depart: Thu Oct 12 2017 Return: Thu Oct 26 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
BFS
12:35p
12h 35m
1 stop
BFS
12:00a
IAD
6:26p
18h 26m
2 stops
Depart: Thu Sep 28 2017 Return: Sun Oct 1 2017 Trip spans 4 days
United
United
IAD
12:00a
BFS
1:05p
13h 05m
1 stop
BFS
12:00a
IAD
4:15p
16h 15m
1 stop
Depart: Thu Oct 5 2017 Return: Sun Oct 8 2017 Trip spans 4 days
United
United
IAD
12:00a
BFS
1:30p
13h 30m
1 stop
BFS
12:00a
IAD
11:45a
11h 45m
1 stop
Depart: Fri Sep 29 2017 Return: Sun Oct 1 2017 Trip spans 3 days
British Airways
British Airways
IAD
12:00a
BFS
1:15p
13h 15m
1 stop
BFS
12:00a
IAD
9:40p
21h 40m
1 stop
Depart: Wed Aug 30 2017 Return: Wed Sep 6 2017 Trip spans 8 days
$1730
Select
Virgin Atlantic
Virgin Atlantic
IAD
12:00a
BFS
11:15p
23h 15m
2 stops
BFS
12:00a
IAD
6:43a
30h 43m
2 stops
Depart: Thu Sep 28 2017 Return: Sat Sep 30 2017 Trip spans 3 days
American Airlines
American Airlines
IAD
12:00a
BFS
3:00p
15h 00m
1 stop
BFS
12:00a
IAD
2:30a
26h 30m
1 stop
Depart: Fri Sep 22 2017 Return: Mon Sep 25 2017 Trip spans 4 days
Air France
Air France
IAD
12:00a
BFS
2:10p
14h 10m
2 stops
BFS
12:00a
IAD
1:35p
13h 35m
2 stops
Depart: Thu Jan 4 2018 Return: Tue Jan 9 2018 Trip spans 6 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
BFS
4:30p
16h 30m
2 stops
BFS
12:00a
IAD
6:12a
30h 12m
2 stops
Depart: Mon Oct 2 2017 Return: Thu Oct 5 2017 Trip spans 4 days
$1060
Select
Icelandair
Icelandair
IAD
12:00a
BFS
4:45p
16h 45m
1 stop
BFS
12:00a
IAD
10:30a
10h 30m
1 stop
Depart: Fri Sep 22 2017 Return: Sun Sep 24 2017 Trip spans 3 days
Air France
Air France
IAD
12:00a
BFS
2:30p
14h 30m
2 stops
BFS
12:00a
IAD
2:50a
26h 50m
2 stops
Depart: Thu Sep 21 2017 Return: Sat Sep 23 2017 Trip spans 3 days
$1003
Select
American Airlines
American Airlines
IAD
12:00a
BFS
8:25p
20h 25m
1 stop
BFS
12:00a
IAD
2:30a
26h 30m
1 stop
Depart: Wed Aug 30 2017 Return: Thu Sep 7 2017 Trip spans 9 days
$1069
Select
Icelandair
Icelandair
IAD
12:00a
BFS
4:45p
16h 45m
1 stop
BFS
12:00a
IAD
10:30a
10h 30m
1 stop
Depart: Thu Sep 21 2017 Return: Sun Sep 24 2017 Trip spans 4 days
Air France
Air France
IAD
12:00a
BFS
1:35p
13h 35m
2 stops
BFS
12:00a
IAD
2:50a
26h 50m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Washington
$475
Destination

Belfast
$475