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Cheap flights from Belfast to Washington, D.C. from £303

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — WAS
6 Mar — 13 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 4 February 2026.

Mon 23/207:50
BFS
-
IAD
3 stops35h 45m
Multiple Airlines
Mon 2/319:40
IAD
-
BFS
2 stops11h 20m
Multiple Airlines
Deal found 3/2£524
Mon 23/217:20
BHD
-
IAD
3 stops30h 10m
Multiple Airlines
Mon 2/319:40
IAD
-
BHD
2 stops19h 50m
Multiple Airlines
Deal found 3/2£642
Mon 23/210:15
BHD
-
BWI
3 stops29h 12m
Multiple Airlines
Mon 2/319:40
BWI
-
BHD
2 stops11h 35m
Multiple Airlines
Deal found 3/2£697
Mon 23/209:15
BHD
-
DCA
2 stops16h 28m
British Airways
Mon 2/318:14
DCA
-
BHD
2 stops15h 01m
British Airways
Deal found 3/2£717
Wed 18/206:35
BHD
-
DCA
2 stops14h 50m
British Airways
Sun 22/222:45
DCA
-
BHD
2 stops30h 55m
British Airways
Deal found 1/2£727
Mon 23/209:15
BHD
-
IAD
1 stop11h 20m
British Airways
Mon 2/314:03
IAD
-
BHD
2 stops19h 12m
British Airways
Deal found 3/2£731
Thu 5/320:00
BHD
-
IAD
1 stop28h 55m
British Airways
Mon 9/322:45
IAD
-
BHD
1 stop11h 30m
British Airways
Deal found 2/2£732
Mon 23/206:35
BHD
-
DCA
2 stops14h 50m
Multiple Airlines
Mon 2/316:34
DCA
-
BHD
2 stops13h 06m
Multiple Airlines
Deal found 3/2£742
Thu 5/311:05
BHD
-
BWI
1 stop12h 40m
British Airways
Mon 9/312:16
BWI
-
BHD
2 stops18h 24m
British Airways
Deal found 2/2£742
Mon 23/206:30
BHD
-
IAD
2 stops14h 58m
KLM
Mon 2/319:35
IAD
-
BHD
2 stops16h 10m
KLM
Deal found 3/2£768
Fri 3/408:55
BFS
-
IAD
2 stops15h 25m
Multiple Airlines
Tue 14/420:30
IAD
-
BFS
3 stops21h 50m
Multiple Airlines
Deal found 3/2£842
Fri 3/409:50
BHD
-
IAD
1 stop10h 45m
Virgin Atlantic
Tue 14/417:40
IAD
-
BHD
1 stop18h 15m
Virgin Atlantic
Deal found 3/2£865

Find 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 4 February 2026.

Round-trip from

£524

One-way from

£303
23/2-2/3
  • 23/2-2/3
  • 5 total stops
  • 47h 05m total
  • Belfast to Washington, D.C.
Search Deals
1/3
  • 1/3
  • 3 total stops
  • 44h 50m 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 4 February 2026.
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

Mon 23/2

07:50-14:35

3 stops35h 45m

Washington, D.C. Dulles Intl

Mon 2/3

19:40-12:00

2 stops11h 20m

£524

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 23/2

17:20-18:30

3 stops30h 10m

Washington, D.C. Dulles Intl

Mon 2/3

19:40-20:30

2 stops19h 50m

£642

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 23/2

10:15-10:27

3 stops29h 12m

Baltimore/Washington

Mon 2/3

19:40-12:15

2 stops11h 35m

£697

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 23/2

09:15-20:43

2 stops16h 28m

Washington, D.C. Reagan-National

Mon 2/3

18:14-14:15

2 stops15h 01m

£717

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Wed 18/2

06:35-16:25

2 stops14h 50m

Washington, D.C. Reagan-National

Sun 22/2

22:45-10:40

2 stops30h 55m

£727

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 23/2

09:15-15:35

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 2/3

14:03-14:15

2 stops19h 12m

£731

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/3

20:00-19:55

1 stop28h 55m

Washington, D.C. Dulles Intl

Mon 9/3

22:45-14:15

1 stop11h 30m

£732

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 23/2

06:35-16:25

2 stops14h 50m

Washington, D.C. Reagan-National

Mon 2/3

16:34-10:40

2 stops13h 06m

£742

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 5/3

11:05-18:45

1 stop12h 40m

Baltimore/Washington

Mon 9/3

12:16-10:40

2 stops18h 24m

£742

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 23/2

06:30-16:28

2 stops14h 58m

Washington, D.C. Dulles Intl

Mon 2/3

19:35-16:45

2 stops16h 10m

£768

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 21 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.
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 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 16h 28m. Airlines will cover a distance of 3378 mi.

  • 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 Intl - Washington, D.C. Dulles Intl, Belfast City - Washington, D.C. Dulles Intl or Belfast Intl - 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

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Alternative routes for Belfast to Washington, D.C.

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