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Cheap flights from District of Columbia to Belfast Intl Airport from £309

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
10 May — 17 May1
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 10 April 2026.

Tue 5/520:30
IAD
-
BFS
3 stops18h 20m
Multiple Airlines
Tue 12/520:15
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 6/4£564
Sat 25/420:30
IAD
-
BFS
2 stops21h 55m
Multiple Airlines
Sun 3/522:10
BFS
-
IAD
3 stops46h 00m
Multiple Airlines
Deal found 6/4£589
Thu 12/1117:25
IAD
-
BFS
2 stops23h 55m
Multiple Airlines
Tue 17/1120:55
BFS
-
IAD
3 stops47h 20m
Multiple Airlines
Deal found 6/4£638
Thu 16/413:20
IAD
-
BFS
2 stops29h 05m
Multiple Airlines
Mon 20/418:50
BFS
-
IAD
2 stops30h 00m
Multiple Airlines
Deal found 8/4£679
Tue 19/515:45
IAD
-
BFS
3 stops19h 35m
Multiple Airlines
Mon 25/521:05
BFS
-
IAD
3 stops47h 05m
Multiple Airlines
Deal found 6/4£716
Thu 23/420:20
IAD
-
BFS
2 stops20h 20m
Multiple Airlines
Sun 26/422:10
BFS
-
IAD
3 stops46h 00m
Multiple Airlines
Deal found 9/4£754
Tue 19/506:00
DCA
-
BFS
3 stops32h 40m
Multiple Airlines
Mon 25/506:40
BFS
-
DCA
2 stops18h 18m
Multiple Airlines
Deal found 6/4£843

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 10 April 2026.

Round-trip from

£564

One-way from

£309
5/5-12/5
  • 5/5-12/5
  • 6 total stops
  • 66h 15m total
  • District of Columbia to Belfast
Search Deals
2/7
  • 2/7
  • 3 total stops
  • 40h 35m 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 10 April 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

Tue 5/5

20:30-19:50

3 stops18h 20m

Belfast Intl

Tue 12/5

20:15-15:10

3 stops47h 55m

£564

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 25/4

20:30-23:25

2 stops21h 55m

Belfast Intl

Sun 3/5

22:10-15:10

3 stops46h 00m

£589

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 19/5

15:45-16:20

3 stops19h 35m

Belfast Intl

Mon 25/5

21:05-15:10

3 stops47h 05m

£716

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 23/4

20:20-21:40

2 stops20h 20m

Belfast Intl

Sun 26/4

22:10-15:10

3 stops46h 00m

£754

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 24/5

08:18-21:00

3 stops31h 42m

Belfast Intl

Sun 31/5

20:45-19:20

3 stops27h 35m

£783
Fastest return journey

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 19/5

06:00-19:40

3 stops32h 40m

Belfast Intl

Mon 25/5

06:40-19:58

2 stops18h 18m

£843
Cheapest one-way
Fastest single journey

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 2/7

11:30-09:05

3 stops40h 35m

£309

Flights are sorted by cheapest return flights first.

Deals found on 7/4

Sorted by cheapest first

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
Ballymena
Cookstown
Dungannon

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How does Cheapflights help users find flights from District of Columbia to Belfast Intl?

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast Intl from District of Columbia.

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

Yes, we can. To see specific flights from District of Columbia to Belfast Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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