Cheap flights from District of Columbia to Belfast Intl Airport from £323
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from District of Columbia to Belfast Intl
Keep the following information in mind while searching for District of Columbia to Belfast Intl flight deals. Data was last updated 29 August 2025.
Find flight deals from District of Columbia to Belfast Intl
Cheapest flights from District of Columbia to Belfast IntlExplore the most affordable flight options available from District of Columbia to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.
Explore the most affordable flight options available from District of Columbia to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from District of Columbia to Belfast Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Sat 11/10
14:25-22:30
2 stops27h 05m
Belfast Intl
Sat 18/10
21:05-15:20
3 stops47h 15m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Sun 12/10
17:45-22:20
3 stops23h 35m
Belfast Intl
Sun 19/10
21:00-20:50
2 stops28h 50m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Thu 9/10
22:20-23:30
3 stops20h 10m
Belfast Intl
Thu 16/10
07:10-20:50
2 stops18h 40m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Mon 22/9
17:45-22:55
3 stops24h 10m
Belfast Intl
Mon 29/9
22:45-15:20
3 stops45h 35m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Fri 26/9
23:15-22:20
2 stops18h 05m
Belfast Intl
Mon 29/9
08:45-19:20
2 stops39h 35m
Washington, D.C.Belfast
DCA - BFS
DCABFS
Washington, D.C. Reagan-National
Fri 10/10
07:00-07:15
3 stops43h 15m
Best time to book a flight from District of Columbia to Belfast Intl
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Related info for your journey
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Alternative routes for District of Columbia to Belfast Intl
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Can Cheapflights find flights from District of Columbia to Belfast Intl with no change fees?
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