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Cheap flights from District of Columbia to Belfast Intl Airport from £251

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
29 Jun — 6 Jul1
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 30 May 2026.

Wed 11/1119:40
IAD
-
BFS
2 stops19h 40m
Multiple Airlines
Wed 18/1107:55
BFS
-
IAD
3 stops36h 20m
Multiple Airlines
Deal found 29/5£604
Tue 7/709:55
IAD
-
BFS
2 stops28h 55m
Multiple Airlines
Mon 13/706:30
BFS
-
IAD
2 stops18h 54m
Multiple Airlines
Deal found 27/5£626
Tue 3/1119:40
IAD
-
BFS
2 stops20h 15m
Multiple Airlines
Wed 18/1107:55
BFS
-
IAD
3 stops36h 20m
Multiple Airlines
Deal found 29/5£642
Sat 14/1119:40
IAD
-
BFS
3 stops19h 35m
Multiple Airlines
Wed 25/1108:50
BFS
-
IAD
3 stops35h 25m
Multiple Airlines
Deal found 29/5£646
Mon 7/920:30
IAD
-
BFS
2 stops19h 10m
Multiple Airlines
Sun 13/906:25
BFS
-
IAD
3 stops37h 45m
Multiple Airlines
Deal found 26/5£647
Mon 2/1119:40
IAD
-
BFS
3 stops20h 30m
Multiple Airlines
Sat 7/1108:30
BFS
-
IAD
3 stops41h 05m
Multiple Airlines
Deal found 26/5£653
Tue 8/909:55
IAD
-
BFS
2 stops28h 45m
Multiple Airlines
Fri 18/908:55
BFS
-
IAD
3 stops40h 10m
Multiple Airlines
Deal found 25/5£660
Sun 2/812:40
DCA
-
BFS
3 stops24h 45m
Multiple Airlines
Thu 6/808:20
BFS
-
DCA
3 stops18h 28m
Multiple Airlines
Deal found 28/5£664
Tue 7/706:00
DCA
-
BFS
3 stops35h 15m
Multiple Airlines
Mon 13/706:30
BFS
-
DCA
3 stops32h 48m
Multiple Airlines
Deal found 28/5£683
Sat 31/1020:40
IAD
-
BFS
2 stops20h 35m
Multiple Airlines
Sat 7/1108:30
BFS
-
IAD
3 stops41h 05m
Multiple Airlines
Deal found 26/5£689
Mon 13/706:59
DCA
-
BFS
2 stops25h 21m
Multiple Airlines
Mon 20/720:35
BFS
-
DCA
3 stops30h 13m
Multiple Airlines
Deal found 29/5£763
Sun 5/712:40
DCA
-
BFS
3 stops29h 10m
Multiple Airlines
Sun 12/706:45
BFS
-
DCA
3 stops20h 03m
Multiple Airlines
Deal found 26/5£801

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 30 May 2026.

Round-trip from

£604

One-way from

£251
11/11-18/11
  • 11/11-18/11
  • 5 total stops
  • 56h 00m total
  • District of Columbia to Belfast
Search Deals
1/11
  • 1/11
  • 3 total stops
  • 31h 15m 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 30 May 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

Wed 11/11

19:40-20:20

2 stops19h 40m

Belfast Intl

Wed 18/11

07:55-15:15

3 stops36h 20m

£604

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 7/7

09:55-19:50

2 stops28h 55m

Belfast Intl

Mon 13/7

06:30-20:24

2 stops18h 54m

£626

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 14/11

19:40-20:15

3 stops19h 35m

Belfast Intl

Wed 25/11

08:50-15:15

3 stops35h 25m

£646

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 7/9

20:30-20:40

2 stops19h 10m

Belfast Intl

Sun 13/9

06:25-15:10

3 stops37h 45m

£647

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 8/9

09:55-19:40

2 stops28h 45m

Belfast Intl

Fri 18/9

08:55-20:05

3 stops40h 10m

£660

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 2/11

19:40-17:00

2 stops16h 20m

Belfast Intl

Sat 7/11

08:30-20:35

3 stops41h 05m

£666
Fastest return journey

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Sun 2/8

12:40-18:25

3 stops24h 45m

Belfast Intl

Thu 6/8

08:20-22:31

2 stops19h 11m

£674

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 7/7

06:00-22:15

3 stops35h 15m

Belfast Intl

Mon 13/7

06:30-10:18

3 stops32h 48m

£683

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 31/10

20:40-21:15

2 stops20h 35m

Belfast Intl

Sat 7/11

08:30-20:35

3 stops41h 05m

£689

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 2/8

09:55-18:25

2 stops27h 30m

Belfast Intl

Thu 6/8

08:20-20:24

2 stops17h 04m

£724

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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
Ballymena
Dungannon

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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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