Find flights
When to book
FAQs

Cheap flights from Belfast Intl Airport to Washington, D.C. from £542

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 November 2025.

Round-trip from

£542
3/12-10/12
  • 3/12-10/12
  • 5 total stops
  • 53h 55m total
  • Belfast to Washington, D.C.
Search Deals

Find flight deals from Belfast Intl to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Washington, D.C.
Explore the most affordable flight options available from Belfast Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 November 2025.

Wed 3/1207:10BFS - IAD
3 stops37h 05mMultiple Airlines
Wed 10/1222:30IAD - BFS
2 stops16h 50mMultiple Airlines
Deal found 5/11£542
Thu 11/1221:00BFS - IAD
3 stops47h 15mMultiple Airlines
Sun 14/1222:30IAD - BFS
2 stops15h 25mMultiple Airlines
Deal found 4/11£580
Thu 13/1107:05BFS - IAD
2 stops16h 25mMultiple Airlines
Mon 17/1119:40IAD - BFS
2 stops18h 25mMultiple Airlines
Deal found 3/11£608
Thu 13/1106:30BFS - BWI
2 stops17h 10mMultiple Airlines
Mon 17/1119:40BWI - BFS
2 stops19h 30mMultiple Airlines
Deal found 3/11£630
Thu 11/1206:30BFS - BWI
2 stops17h 10mMultiple Airlines
Sun 14/1219:40BWI - BFS
2 stops19h 30mMultiple Airlines
Deal found 4/11£673
Wed 3/1221:05BFS - BWI
2 stops26h 35mMultiple Airlines
Wed 10/1219:40BWI - BFS
2 stops18h 40mMultiple Airlines
Deal found 5/11£798

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to Washington, D.C. 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 6 November 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Washington, D.C. that are best for you.

Fly from

Belfast Intl

Fly to

Washington, D.C.

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 3/12

07:10-15:15

3 stops37h 05m

Washington, D.C. Dulles Intl

Wed 10/12

22:30-20:20

2 stops16h 50m

£542

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/12

21:00-15:15

3 stops47h 15m

Washington, D.C. Dulles Intl

Sun 14/12

22:30-18:55

2 stops15h 25m

£580

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 11/12

06:30-18:40

2 stops17h 10m

Baltimore/Washington

Sun 14/12

19:40-20:10

2 stops19h 30m

£673

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Wed 3/12

21:05-18:40

2 stops26h 35m

Baltimore/Washington

Wed 10/12

19:40-19:20

2 stops18h 40m

£798

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Best time to book a flight from Belfast Intl to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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 Washington, D.C.
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 Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from Belfast Intl Airport to Washington, D.C.?

    The most popular flight routes from Belfast Intl Airport to Washington, D.C. are Belfast Intl - Washington, D.C. Dulles Intl, Belfast Intl - Baltimore/Washington and Belfast Intl - Washington, D.C. Reagan-National.

  • Can I find deals for flights from Belfast Intl to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Belfast Intl to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast Intl to Washington, D.C.?

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

  • Can I find deals for business class flights from Belfast Intl to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Belfast Intl to Washington, D.C. 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

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.

Alternative routes for Belfast Intl to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Belfast City to Dulles Intl flights
Belfast City to Reagan-National flights

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 Washington, D.C.?

When you search for this flight from Belfast Intl to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Washington, D.C.?

Cheapflights simply makes it quick and affordable to book flights from Belfast Intl to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Belfast Intl to Washington, D.C. with no change fees?

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

Can Cheapflights notify me if prices for flights from Belfast Intl to Washington, D.C. become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Belfast Intl today and book when prices fit your budget.

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.