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Cheap flights from District of Columbia to Belfast from £218

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BHD
30 Dec — 6 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 30 November 2025.

Round-trip from

£415

One-way from

£218

Popular in

June

Cheapest in

February

Average price

£533
British Airways
  • British Airways
  • 21/1-28/1
  • 2 total stops
  • 27h 50m total
  • District of Columbia to Belfast
Search Deals
5/3
  • 5/3
  • 3 total stops
  • 47h 30m total
  • District of Columbia to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 30 November 2025.

Fri 5/1218:05IAD - BHD
1 stop21h 55mKLM
Thu 11/1206:30BHD - IAD
1 stop14h 35mKLM
Deal found 30/11£494
Fri 5/1217:02DCA - BHD
2 stops18h 48mDelta
Wed 10/1206:30BHD - DCA
2 stops15h 06mDelta
Deal found 30/11£594
Tue 2/1218:20IAD - BHD
1 stop11h 10mBritish Airways
Mon 8/1219:25BHD - IAD
1 stop25h 10mBritish Airways
Deal found 29/11£627
Fri 5/1218:05IAD - BHD
1 stop17h 45mMultiple Airlines
Fri 12/1206:30BHD - IAD
2 stops14h 53mMultiple Airlines
Deal found 30/11£628
Sat 6/1218:20IAD - BHD
1 stop9h 50mBritish Airways
Thu 11/1210:40BHD - IAD
1 stop14h 15mBritish Airways
Deal found 30/11£695
Fri 5/1217:05IAD - BHD
2 stops14h 45mAer Lingus
Wed 10/1210:20BHD - IAD
2 stops14h 10mAer Lingus
Deal found 30/11£696
Tue 2/1217:24DCA - BHD
2 stops18h 21mBritish Airways
Mon 8/1217:45BHD - DCA
2 stops33h 45mBritish Airways
Deal found 29/11£700
Sat 6/1218:20IAD - BHD
1 stop9h 50mBritish Airways
Wed 10/1206:35BHD - IAD
1 stop14h 00mBritish Airways
Deal found 30/11£730
Sat 6/1219:55DCA - BHD
2 stops33h 25mBritish Airways
Thu 11/1206:35BHD - DCA
2 stops16h 08mBritish Airways
Deal found 30/11£735
Sun 7/1218:05IAD - BHD
1 stop17h 45mMultiple Airlines
Thu 11/1206:30BHD - IAD
1 stop14h 35mMultiple Airlines
Deal found 30/11£746
Fri 5/1217:31DCA - BHD
2 stops18h 19mDelta
Fri 12/1206:30BHD - DCA
2 stops15h 35mDelta
Deal found 30/11£753
Sun 7/1217:31DCA - BHD
2 stops18h 19mDelta
Wed 10/1206:30BHD - DCA
2 stops15h 06mDelta
Deal found 30/11£756

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 30 November 2025.
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

Wed 14/1

19:40-16:10

2 stops15h 30m

Belfast Intl

Wed 21/1

07:55-18:30

2 stops15h 35m

£440

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 11/1

21:45-16:50

1 stop14h 05m

Belfast City

Sat 17/1

15:05-15:35

1 stop29h 30m

£441

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

22:45-16:05

1 stop13h 20m

Belfast City

Sun 22/3

15:10-16:35

1 stop29h 25m

£441

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

18:20-10:20

1 stop11h 00m

Belfast City

Thu 12/3

11:05-20:55

1 stop13h 50m

£441

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/2

21:45-14:15

1 stop11h 30m

Belfast City

Sun 15/2

09:10-15:35

1 stop11h 25m

£458

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 16/3

13:30-09:05

2 stops15h 35m

Belfast City

Sun 22/3

15:10-10:00

2 stops22h 50m

£477

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 11/1

17:45-13:55

2 stops15h 10m

Belfast City

Sat 17/1

18:00-18:54

2 stops29h 54m

£477

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 11/2

17:00-16:50

2 stops18h 50m

Belfast City

Sun 15/2

17:20-17:04

2 stops28h 44m

£502

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 13/1

19:40-16:00

2 stops15h 20m

Belfast Intl

Tue 20/1

06:30-18:30

2 stops17h 00m

£505

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 11/1

17:05-18:55

2 stops20h 50m

Belfast Intl

Sat 17/1

21:05-15:35

2 stops23h 30m

£528

Flights are sorted by cheapest return flights first.

Deals found on 28/11

Showing 1-10 of 26 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 14h 05m. Fly via British Airways or Delta 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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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.

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