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Cheap flights from Belfast to Washington, D.C. from £335

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 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — WAS
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Washington, D.C.
Explore the most affordable flight options available from Belfast 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
Wed 3/1214:15BHD - IAD
3 stops30h 00mMultiple Airlines
Wed 10/1222:30IAD - BHD
2 stops17h 20mMultiple Airlines
Deal found 5/11£548
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 13/1107:00BHD - IAD
2 stops16h 30mMultiple Airlines
Mon 17/1119:40IAD - BHD
2 stops20h 10mMultiple Airlines
Deal found 3/11£646
Thu 11/1207:25BHD - IAD
2 stops16h 05mMultiple Airlines
Sun 14/1219:40IAD - BHD
2 stops19h 50mMultiple Airlines
Deal found 4/11£661
Thu 11/1207:25BHD - BWI
2 stops16h 15mMultiple Airlines
Sun 14/1219:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 4/11£670
Thu 11/1206:30BFS - BWI
2 stops17h 10mMultiple Airlines
Sun 14/1219:40BWI - BFS
2 stops19h 30mMultiple Airlines
Deal found 4/11£673
Sun 23/1107:25BHD - BWI
2 stops16h 15mMultiple Airlines
Sun 30/1119:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 3/11£694
Thu 13/1107:25BHD - BWI
2 stops16h 15mMultiple Airlines
Mon 17/1119:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 3/11£701
Wed 3/1206:30BHD - IAD
1 stop14h 35mVirgin Atlantic
Wed 10/1218:05IAD - BHD
1 stop21h 55mVirgin Atlantic
Deal found 5/11£702

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

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) 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

One-way from

£335
3/12-10/12
  • 3/12-10/12
  • 5 total stops
  • 53h 55m total
  • Belfast to Washington, D.C.
Search Deals
21/11
  • 21/11
  • 2 total stops
  • 41h 30m total
  • Belfast to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast 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 to Washington, D.C. that are best for you.

Fly from

Belfast

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

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

14:15-15:15

3 stops30h 00m

Washington, D.C. Dulles Intl

Wed 10/12

21:45-19:20

1 stop16h 35m

£645

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 11/12

07:25-18:30

2 stops16h 05m

Washington, D.C. Dulles Intl

Sun 14/12

19:40-20:30

2 stops19h 50m

£661

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 11/12

07:25-18:40

2 stops16h 15m

Baltimore/Washington

Sun 14/12

19:40-20:30

2 stops19h 50m

£670

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

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 10/12

17:03-16:50

2 stops18h 47m

£702

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 10/12

18:05-21:00

1 stop21h 55m

£702

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

06:35-17:43

2 stops16h 08m

Washington, D.C. Reagan-National

Mon 8/12

15:54-14:15

2 stops17h 21m

£731

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Fri 6/3

08:45-18:45

1 stop15h 00m

Baltimore/Washington

Tue 10/3

21:35-11:30

1 stop9h 55m

£744

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 52 results
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Best time to book a flight from Belfast to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Belfast 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 to Washington, D.C.

What is the cheapest time of day to fly from BFS to WAS?

Find hourly flight availability from Belfast to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 November 2025.

When flying from Belfast to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Belfast 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.

  • How long is the flight from Belfast to Washington, D.C.?

    Departing from Belfast to Washington, D.C. will take you 14h 35m. Airlines will cover a distance of 3390 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    When deciding which route to take from Belfast to Washington, D.C. consider Belfast City - Washington, D.C. Dulles Intl, Belfast Intl - Baltimore/Washington or Belfast City - Baltimore/Washington as they are the most popular.

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

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

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

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

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

Cheapflights makes it easy to find Belfast to Washington, D.C. flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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 Washington, D.C. from Belfast.

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

Yes, we can. To see specific flights from Belfast 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 to Washington, D.C. become cheaper?

Not ready to book yet? You can track prices for flights from Belfast to Washington, D.C. on Cheapflights with our Price Alert feature and get notified when better prices are available.

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