Find Cheap Flights from Washington Dulles Intl 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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights from Washington Dulles Intl to Belfast

(Round-trip)
Depart: Sat Dec 23 2017 Return: Sun Dec 31 2017 Trip spans 9 days
Delta
Delta
IAD
6:00a
BFS
2:50a
20h 50m
2 stops
BFS
8:20a
IAD
11:44p
15h 24m
2 stops
Depart: Sat Sep 16 2017 Return: Sat Oct 7 2017 Trip spans 22 days
Iberia
Iberia
IAD
6:20p
BFS
5:35a
11h 15m
1 stop
BFS
2:45a
IAD
9:20p
18h 35m
1 stop
Depart: Mon Jul 24 2017 Return: Tue Aug 1 2017 Trip spans 9 days
$1015
Select
Icelandair
Icelandair
IAD
4:35p
BFS
2:40a
10h 05m
1 stop
BFS
9:40a
IAD
1:45p
28h 05m
1 stop
Depart: Tue Jul 25 2017 Return: Mon Jul 31 2017 Trip spans 7 days
$1015
Select
Major Airline
Major Airline
IAD
10:00a
BFS
11:50p
13h 50m
1 stop
BFS
12:05p
IAD
9:45a
21h 40m
1 stop
Depart: Tue Jul 11 2017 Return: Tue Jul 18 2017 Trip spans 8 days
$1088
Select
United
United
IAD
2:15p
BFS
3:30a
13h 15m
1 stop
BFS
4:45a
IAD
4:10p
11h 25m
1 stop
Depart: Wed Aug 23 2017 Return: Sat Aug 26 2017 Trip spans 4 days
$1307
Select
British Airways
British Airways
IAD
6:20p
BFS
5:20a
11h 00m
1 stop
BFS
1:20p
IAD
1:45p
24h 25m
1 stop
Depart: Wed Jul 5 2017 Return: Wed Jul 12 2017 Trip spans 8 days
$1320
Select
Air Canada
Air Canada
IAD
11:40a
BFS
3:30a
15h 50m
2 stops
BFS
4:45a
IAD
10:54p
18h 09m
2 stops
Depart: Mon Sep 25 2017 Return: Thu Sep 28 2017 Trip spans 4 days
$1058
Select
Icelandair
Icelandair
IAD
4:35p
BFS
2:40a
10h 05m
1 stop
BFS
9:40a
IAD
8:10p
10h 30m
1 stop
Depart: Sun Jul 23 2017 Return: Wed Aug 2 2017 Trip spans 11 days
$1088
Select
United
United
IAD
2:15p
BFS
3:30a
13h 15m
1 stop
BFS
9:15a
IAD
4:10p
30h 55m
1 stop
Depart: Wed Jul 26 2017 Return: Tue Aug 1 2017 Trip spans 7 days
$1066
Select
Icelandair
Icelandair
IAD
9:55a
BFS
2:40a
16h 45m
1 stop
BFS
9:40a
IAD
1:45p
28h 05m
1 stop
Depart: Sat Jul 22 2017 Return: Wed Aug 2 2017 Trip spans 12 days
$1171
Select
United
United
IAD
6:10p
BFS
7:35a
13h 25m
1 stop
BFS
9:15a
IAD
4:10p
30h 55m
1 stop
Depart: Wed Jul 12 2017 Return: Fri Jul 14 2017 Trip spans 3 days
$1422
Select
Air Canada
Air Canada
IAD
11:40a
BFS
3:30a
15h 50m
2 stops
BFS
4:45a
IAD
10:18p
17h 33m
2 stops
Depart: Fri Jul 28 2017 Return: Wed Aug 2 2017 Trip spans 6 days
$1235
Select
United
United
IAD
2:15p
BFS
3:30a
13h 15m
1 stop
BFS
9:15a
IAD
4:10p
30h 55m
1 stop
Depart: Fri Jul 14 2017 Return: Sat Jul 15 2017 Trip spans 2 days
$1601
Select
British Airways
British Airways
IAD
6:20p
BFS
5:30a
11h 10m
1 stop
BFS
1:20p
IAD
1:45p
24h 25m
1 stop
Depart: Thu Jul 27 2017 Return: Wed Aug 2 2017 Trip spans 7 days
$1275
Select
United
United
IAD
2:15p
BFS
3:30a
13h 15m
1 stop
BFS
9:15a
IAD
4:10p
30h 55m
1 stop
Depart: Sun Jul 9 2017 Return: Tue Jul 11 2017 Trip spans 3 days
$1382
Select
United
United
IAD
6:10p
BFS
7:35a
13h 25m
1 stop
BFS
9:15a
IAD
11:50a
26h 35m
1 stop
Depart: Mon Jul 10 2017 Return: Wed Jul 12 2017 Trip spans 3 days
$1382
Select
United
United
IAD
6:10p
BFS
7:35a
13h 25m
1 stop
BFS
9:15a
IAD
11:50a
26h 35m
1 stop
Depart: Thu Jul 13 2017 Return: Sat Jul 15 2017 Trip spans 3 days
$2632
Select
United
United
IAD
2:15p
BFS
3:30a
13h 15m
1 stop
BFS
4:45a
IAD
4:10p
11h 25m
1 stop
* 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.

We compile tonnes of data for you
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,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Washington
$912
Destination

Belfast
$912