Find flights
When to book

Cheap flights from Belfast Intl Airport to District of Columbia from £294

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
12 Apr — 19 Apr1
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 13 March 2026.

Thu 9/406:20
BFS
-
IAD
3 stops37h 50m
Multiple Airlines
Wed 15/420:30
IAD
-
BFS
3 stops19h 30m
Multiple Airlines
Deal found 12/3£609
Thu 23/412:45
BFS
-
IAD
2 stops33h 15m
Multiple Airlines
Thu 30/420:20
IAD
-
BFS
2 stops18h 10m
Multiple Airlines
Deal found 9/3£678
Sun 26/420:20
BFS
-
IAD
3 stops47h 50m
Multiple Airlines
Sun 3/520:30
IAD
-
BFS
2 stops19h 30m
Multiple Airlines
Deal found 12/3£699

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 13 March 2026.

Round-trip from

£609

One-way from

£294
9/4-15/4
  • 9/4-15/4
  • 6 total stops
  • 57h 20m total
  • Belfast to District of Columbia
Search Deals
30/4
  • 30/4
  • 2 total stops
  • 39h 17m 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 13 March 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

Thu 9/4

06:20-15:10

3 stops37h 50m

Washington, D.C. Dulles Intl

Wed 15/4

20:30-21:00

3 stops19h 30m

£609
Fastest return journey

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 23/4

21:25-19:00

3 stops26h 35m

Washington, D.C. Dulles Intl

Thu 30/4

20:30-23:00

3 stops21h 30m

£730

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 26/4

09:55-16:05

2 stops35h 10m

Washington, D.C. Dulles Intl

Sun 3/5

18:15-15:15

2 stops16h 00m

£773
Cheapest one-way

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 30/4

21:10-07:27

2 stops39h 17m

£294

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 15/4

08:30-15:10

3 stops35h 40m

£306

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 30/4

09:15-22:29

3 stops42h 14m

£394
Fastest single journey

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Wed 15/4

08:15-13:00

3 stops33h 45m

£464

Flights are sorted by cheapest return flights first.

Deals found on 13/3

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
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 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.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast Intl to District of Columbia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to District of Columbia from Belfast Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Belfast Intl to District of Columbia with no change fees.

Can Cheapflights notify me if prices for flights from Belfast Intl to District of Columbia become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.