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Cheap flights from District of Columbia to Belfast from £312

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BHD
26 Mar — 2 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from District of Columbia to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from District of Columbia to Belfast
Explore the most affordable flight options available from District of Columbia to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 February 2026.

Tue 7/420:30
IAD
-
BFS
2 stops13h 45m
Multiple Airlines
Wed 15/407:30
BFS
-
IAD
2 stops16h 50m
Multiple Airlines
Deal found 21/2£469
Mon 23/319:20
IAD
-
BHD
1 stop11h 20m
British Airways
Mon 30/319:35
BHD
-
IAD
1 stop26h 40m
British Airways
Deal found 23/2£475
Tue 24/319:20
IAD
-
BHD
1 stop11h 10m
British Airways
Tue 31/320:25
BHD
-
IAD
1 stop26h 00m
British Airways
Deal found 22/2£479
Tue 25/821:30
IAD
-
BHD
1 stop12h 50m
British Airways
Tue 1/913:45
BHD
-
IAD
1 stop10h 55m
British Airways
Deal found 21/2£486
Tue 7/417:40
IAD
-
BHD
1 stop10h 20m
British Airways
Wed 15/420:35
BHD
-
IAD
1 stop24h 15m
British Airways
Deal found 21/2£487
Mon 6/420:30
IAD
-
BFS
2 stops19h 10m
Multiple Airlines
Mon 13/409:10
BFS
-
IAD
2 stops35h 00m
Multiple Airlines
Deal found 20/2£487
Mon 23/216:46
IAD
-
BHD
2 stops16h 29m
American Airlines
Mon 2/306:35
BHD
-
IAD
2 stops18h 55m
American Airlines
Deal found 21/2£489
Thu 19/322:45
IAD
-
BHD
1 stop13h 55m
British Airways
Thu 26/310:40
BHD
-
IAD
1 stop14h 15m
British Airways
Deal found 20/2£494
Thu 19/319:05
IAD
-
BHD
1 stop17h 35m
Multiple Airlines
Thu 26/317:20
BHD
-
IAD
1 stop27h 45m
Multiple Airlines
Deal found 23/2£495
Fri 2/1019:15
IAD
-
BHD
1 stop15h 15m
British Airways
Fri 9/1011:00
BHD
-
IAD
1 stop11h 25m
British Airways
Deal found 20/2£496
Thu 5/312:24
IAD
-
BHD
2 stops23h 26m
Delta
Thu 12/306:30
BHD
-
IAD
1 stop14h 35m
Delta
Deal found 23/2£498
Wed 8/420:30
IAD
-
BFS
2 stops15h 35m
Multiple Airlines
Wed 15/407:35
BFS
-
IAD
2 stops16h 45m
Multiple Airlines
Deal found 22/2£498

Find flight deals from District of Columbia to Belfast

Keep the following information in mind while searching for District of Columbia to Belfast flight deals. Data was last updated 24 February 2026.

Round-trip from

£469

One-way from

£312
7/4-15/4
  • 7/4-15/4
  • 4 total stops
  • 30h 35m total
  • District of Columbia to Belfast
Search Deals
7/3
  • 7/3
  • 2 total stops
  • 33h 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 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 24 February 2026.
Use the filters below to find and compare flights from District of Columbia to Belfast that are best for you.

Fly from

District of Columbia

Fly to

Belfast

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 7/4

20:30-15:15

2 stops13h 45m

Belfast Intl

Wed 15/4

07:30-19:20

2 stops16h 50m

£469

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 8/4

20:30-17:05

2 stops15h 35m

Belfast Intl

Wed 15/4

20:15-20:35

3 stops29h 20m

£469

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 6/4

20:30-20:40

2 stops19h 10m

Belfast Intl

Mon 13/4

09:10-15:10

2 stops35h 00m

£487

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 23/3

13:19-16:45

2 stops23h 26m

Belfast City

Mon 30/3

09:50-15:35

1 stop10h 45m

£498

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 7/4

17:25-10:45

2 stops12h 20m

Belfast City

Wed 15/4

10:05-21:20

2 stops16h 15m

£500

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 7/4

20:30-16:00

2 stops14h 30m

Belfast City

Wed 15/4

07:00-19:20

2 stops17h 20m

£514

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 16/4

20:30-23:00

3 stops21h 30m

Belfast Intl

Mon 20/4

09:10-15:10

2 stops35h 00m

£518

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 2/4

20:30-23:05

2 stops21h 35m

Belfast Intl

Sun 12/4

07:10-20:35

3 stops42h 25m

£539

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 24/3

16:28-10:30

2 stops14h 02m

Belfast City

Tue 31/3

09:40-20:37

2 stops15h 57m

£548

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 2/4

19:15-20:35

1 stop20h 20m

Belfast City

Tue 7/4

20:25-17:25

1 stop26h 00m

£553

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 37 results
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Best time to book a flight from District of Columbia to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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
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. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from District of Columbia to Belfast?

    There are many flights that can get you from District of Columbia to Belfast in 11h 20m. Fly via British Airways or American Airlines to get the fastest option. The distance between District of Columbia and Belfast is about 3390 mi. This flight may include one or multiple stops.

  • What are the most popular routes from District of Columbia to Belfast?

    Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Dulles Intl - Belfast City or Washington, D.C. Reagan-National - Belfast Intl when deciding on the best route from District of Columbia to Belfast.

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

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

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

    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.

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

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

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from District of Columbia to Belfast?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from District of Columbia to Belfast.

Can Cheapflights find flights from District of Columbia to Belfast with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from District of Columbia to Belfast, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from District of Columbia to Belfast become cheaper?

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