Cheap flights from Washington, D.C. Dulles Intl Airport to Belfast from £464
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Dulles Intl to Belfast
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 September 2025.
Round-trip from | £464 |
---|---|
Popular in | June |
Cheapest in | February |
Average price | £477 |
Find flight deals from Dulles Intl to Belfast
Cheapest flights from Dulles Intl to BelfastExplore the most affordable flight options available from Dulles Intl to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Explore the most affordable flight options available from Dulles Intl to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Belfast that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 3/10
22:45-18:15
1 stop14h 30m
Belfast City
Fri 10/10
11:55-20:15
1 stop13h 20m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 13/10
17:25-16:55
1 stop18h 30m
Belfast City
Mon 20/10
17:25-15:35
1 stop27h 10m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Wed 12/11
12:11-21:00
2 stops27h 49m
Belfast City
Sun 16/11
17:20-16:05
1 stop27h 45m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Wed 12/11
12:11-16:50
2 stops23h 39m
Belfast City
Sun 16/11
17:20-16:05
1 stop27h 45m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 13/10
19:35-16:55
2 stops16h 20m
Belfast City
Mon 20/10
06:30-15:35
1 stop14h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Wed 12/11
18:20-10:15
1 stop10h 55m
Belfast City
Sun 16/11
06:30-15:35
1 stop14h 05m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Wed 29/10
20:40-20:40
2 stops20h 00m
Belfast Intl
Wed 5/11
07:20-18:30
2 stops16h 10m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Tue 28/10
18:30-21:30
3 stops23h 00m
Belfast Intl
Tue 4/11
07:05-21:00
3 stops42h 55m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Thu 30/10
18:30-17:35
3 stops19h 05m
Belfast Intl
Thu 6/11
08:15-21:00
3 stops41h 45m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 11/10
22:50-10:05
1 stop30h 15m
Belfast City
Sat 18/10
16:15-20:20
1 stop33h 05m
Best time to book a flight from Dulles Intl to Belfast
Have a flexible travel schedule? Discover the best time to fly to Belfast from Dulles Intl with our price prediction graph.
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Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Belfast
Related info for your journey
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