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Cheap flights from District of Columbia to Belfast from £457

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BHD
23 Nov — 30 Nov1
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 24 October 2025.

Round-trip from

£457

Popular in

June

Cheapest in

February
7/12-14/12
  • 7/12-14/12
  • 4 total stops
  • 34h 35m total
  • District of Columbia to Belfast
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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 24 October 2025.

Sun 7/1219:40IAD - BFS
2 stops18h 15mMultiple Airlines
Sun 14/1207:10BFS - IAD
2 stops16h 20mMultiple Airlines
Deal found 23/10£457
Sun 23/1118:05IAD - BHD
1 stop21h 55mVirgin Atlantic
Sat 6/1206:30BHD - IAD
1 stop14h 35mVirgin Atlantic
Deal found 22/10£475
Wed 26/1118:20IAD - BHD
1 stop9h 50mAmerican Airlines
Wed 3/1206:35BHD - IAD
2 stops15h 24mAmerican Airlines
Deal found 22/10£484
Wed 12/1118:05IAD - BHD
1 stop17h 45mDelta
Sun 16/1106:30BHD - IAD
1 stop14h 35mDelta
Deal found 22/10£492
Sun 23/1118:05IAD - BHD
1 stop21h 55mKLM
Sat 6/1206:30BHD - IAD
2 stops14h 53mKLM
Deal found 22/10£495
Thu 30/1019:05IAD - BHD
1 stop21h 55mDelta
Mon 3/1106:30BHD - IAD
2 stops21h 49mDelta
Deal found 23/10£499
Wed 26/1116:35DCA - BHD
2 stops19h 15mDelta
Wed 3/1206:30BHD - DCA
2 stops20h 11mDelta
Deal found 23/10£502
Wed 12/1111:05IAD - BHD
2 stops24h 45mVirgin Atlantic
Sun 16/1106:30BHD - IAD
2 stops17h 38mVirgin Atlantic
Deal found 22/10£503
Wed 12/1117:03DCA - BHD
2 stops18h 47mDelta
Sun 16/1106:30BHD - DCA
2 stops21h 26mDelta
Deal found 22/10£503
Sun 23/1122:30IAD - BFS
2 stops15h 25mMultiple Airlines
Sat 6/1208:30BFS - IAD
3 stops41h 30mMultiple Airlines
Deal found 22/10£544
Sat 6/1219:40IAD - BFS
2 stops20h 35mMultiple Airlines
Sat 13/1206:55BFS - IAD
2 stops16h 35mMultiple Airlines
Deal found 22/10£558
Sat 6/1211:13DCA - BFS
2 stops18h 42mMultiple Airlines
Sat 13/1209:40BFS - DCA
2 stops18h 17mMultiple Airlines
Deal found 22/10£580

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 October 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

Sun 7/12

19:40-18:55

2 stops18h 15m

Belfast Intl

Sun 14/12

07:10-18:30

2 stops16h 20m

£457

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

06:30-16:35

1 stop14h 05m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 8/2

18:20-10:20

1 stop11h 00m

Belfast City

Sun 15/2

12:10-19:55

1 stop12h 45m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:20-09:10

1 stop9h 50m

Belfast City

Wed 3/12

06:35-16:59

2 stops15h 24m

£484

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

18:05-16:50

1 stop17h 45m

Belfast City

Sun 16/11

17:20-16:05

1 stop27h 45m

£492

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

18:05-16:50

1 stop17h 45m

Belfast City

Sun 16/11

06:30-16:05

1 stop14h 35m

£492

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-16:50

1 stop17h 45m

Belfast City

Wed 3/12

17:20-16:05

1 stop27h 45m

£492

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 8/3

16:04-10:20

2 stops14h 16m

Belfast City

Sat 21/3

11:35-22:46

2 stops15h 11m

£493

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 16/3

17:23-10:40

2 stops13h 17m

Belfast City

Sun 22/3

10:40-22:46

2 stops16h 06m

£493

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 3/4

17:50-08:50

1 stop10h 00m

Belfast City

Wed 8/4

11:30-17:30

1 stop11h 00m

£495

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 28 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 9h 50m. Fly via British Airways, American Airlines, 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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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.

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