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Cheap flights from District of Columbia to Belfast Intl Airport from £185

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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from District of Columbia to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from District of Columbia to Belfast Intl
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 18 July 2026.

Mon 31/820:30
IAD
-
BFS
3 stops21h 35m
Multiple Airlines
Mon 7/920:15
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 17/7£569
Tue 24/1119:40
IAD
-
BFS
2 stops20h 15m
Multiple Airlines
Sun 29/1122:00
BFS
-
IAD
3 stops45h 45m
Multiple Airlines
Deal found 13/7£586
Sat 29/820:30
IAD
-
BFS
3 stops18h 50m
Multiple Airlines
Sat 5/906:20
BFS
-
IAD
2 stops20h 55m
Multiple Airlines
Deal found 15/7£593
Sat 22/820:30
IAD
-
BFS
2 stops15h 40m
Multiple Airlines
Sat 29/820:15
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 14/7£682
Sat 22/806:00
DCA
-
BFS
3 stops21h 55m
Multiple Airlines
Sat 29/822:25
BFS
-
DCA
2 stops29h 06m
Multiple Airlines
Deal found 14/7£687
Tue 11/817:05
IAD
-
BFS
2 stops23h 15m
Multiple Airlines
Tue 18/822:45
BFS
-
IAD
2 stops21h 39m
Multiple Airlines
Deal found 14/7£688
Thu 3/911:25
IAD
-
BFS
3 stops30h 25m
Multiple Airlines
Mon 7/920:15
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 14/7£720
Tue 11/806:00
DCA
-
BFS
3 stops28h 15m
Multiple Airlines
Tue 18/822:45
BFS
-
DCA
2 stops28h 46m
Multiple Airlines
Deal found 14/7£742
Thu 13/806:00
DCA
-
BFS
3 stops31h 55m
Multiple Airlines
Thu 20/808:20
BFS
-
DCA
2 stops14h 52m
Multiple Airlines
Deal found 13/7£751
Sat 15/812:40
DCA
-
BFS
3 stops15h 55m
Multiple Airlines
Fri 21/807:20
BFS
-
DCA
3 stops33h 40m
Multiple Airlines
Deal found 16/7£852
Mon 31/812:40
DCA
-
BFS
3 stops17h 35m
Multiple Airlines
Mon 7/906:40
BFS
-
DCA
2 stops16h 32m
Multiple Airlines
Deal found 17/7£861

Find 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 18 July 2026.

Round-trip from

£569

One-way from

£185
31/8-7/9
  • 31/8-7/9
  • 6 total stops
  • 69h 30m total
  • District of Columbia to Belfast
Search Deals
22/8
  • 22/8
  • 3 total stops
  • 31h 20m total
  • District of Columbia to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from District of Columbia to Belfast Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 July 2026.
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

Cheapest return flight

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 31/8

20:30-23:05

3 stops21h 35m

Belfast Intl

Mon 7/9

20:15-15:10

3 stops47h 55m

£569

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 24/11

19:40-20:55

2 stops20h 15m

Belfast Intl

Sun 29/11

22:00-14:45

3 stops45h 45m

£586

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 29/8

20:30-20:20

3 stops18h 50m

Belfast Intl

Sat 5/9

06:20-22:15

2 stops20h 55m

£593

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 22/8

20:30-17:10

2 stops15h 40m

Belfast Intl

Sat 29/8

20:15-15:10

3 stops47h 55m

£682

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Sat 22/8

06:00-08:55

3 stops21h 55m

Belfast Intl

Sat 29/8

22:25-22:31

2 stops29h 06m

£687

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 3/9

11:25-22:50

3 stops30h 25m

Belfast Intl

Mon 7/9

20:15-15:10

3 stops47h 55m

£720

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 14/8

23:20-01:40

2 stops21h 20m

Belfast Intl

Mon 24/8

06:40-15:01

3 stops37h 21m

£739

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 11/8

06:00-15:15

3 stops28h 15m

Belfast Intl

Tue 18/8

22:45-22:31

2 stops28h 46m

£742

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Thu 13/8

06:00-18:55

3 stops31h 55m

Belfast Intl

Thu 20/8

08:20-21:48

3 stops18h 28m

£784

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 5/8

17:15-15:05

2 stops16h 50m

Belfast Intl

Tue 11/8

22:45-21:14

3 stops27h 29m

£789

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 18 resultsSorted by cheapest first
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Best time to book a flight from District of Columbia to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from District of Columbia with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Belfast Intl Airport

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from District of Columbia to Belfast Intl that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Belfast Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Belfast Intl.

  • Can I find deals for business class flights from District of Columbia to Belfast Intl?

    Yes. Cheapflights offers flight deals from District of Columbia to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry

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Why should you use Cheapflights to find cheap flight tickets from 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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