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Cheap flights from Belfast Intl Airport to District of Columbia from £458

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
11 Jul — 18 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to District of Columbia

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to District of Columbia
Explore the most affordable flight options available from Belfast Intl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 June 2026.

Tue 27/1007:15
BFS
-
IAD
3 stops40h 50m
Multiple Airlines
Fri 30/1020:40
IAD
-
BFS
3 stops21h 20m
Multiple Airlines
Deal found 8/6£642
Tue 27/1018:35
BFS
-
IAD
3 stops29h 30m
Multiple Airlines
Sat 31/1020:40
IAD
-
BFS
3 stops19h 35m
Multiple Airlines
Deal found 8/6£703

Find flight deals from Belfast Intl to District of Columbia

Keep the following information in mind while searching for Belfast Intl to District of Columbia flight deals. Data was last updated 11 June 2026.

Round-trip from

£642

One-way from

£458
27/10-30/10
  • 27/10-30/10
  • 6 total stops
  • 62h 10m total
  • Belfast to District of Columbia
Search Deals
1/8
  • 1/8
  • 2 total stops
  • 17h 15m total
  • Belfast to District of Columbia
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to District of Columbia 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 11 June 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 27/10

06:00-20:05

3 stops42h 05m

Washington, D.C. Dulles Intl

Fri 30/10

20:40-16:45

2 stops16h 05m

£699
Fastest return journey

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 27/10

18:35-20:05

3 stops29h 30m

Washington, D.C. Dulles Intl

Sat 31/10

20:40-20:15

3 stops19h 35m

£703
Cheapest one-way
Fastest single journey

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sat 1/8

06:55-19:10

2 stops17h 15m

£458

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Sorted by cheapest first

Best time to book a flight from Belfast Intl to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Belfast Intl 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 Belfast Intl Airport to District of Columbia
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Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to District of Columbia. 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 Belfast Intl to District of Columbia that include hotel bookings?

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to District of Columbia.

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

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

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