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Cheap flights from Belfast to Washington, D.C. from £415

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — WAS
28 May — 4 Jun1
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 28 April 2026.

Sun 7/622:10
BFS
-
IAD
3 stops46h 00m
Multiple Airlines
Sun 14/617:15
IAD
-
BFS
2 stops20h 35m
Multiple Airlines
Deal found 23/4£617
Tue 26/507:35
BFS
-
IAD
3 stops36h 35m
Multiple Airlines
Tue 2/617:15
IAD
-
BFS
2 stops21h 25m
Multiple Airlines
Deal found 27/4£659
Fri 5/607:35
BFS
-
IAD
3 stops40h 25m
Multiple Airlines
Tue 16/608:18
IAD
-
BFS
3 stops27h 02m
Multiple Airlines
Deal found 24/4£671
Tue 23/609:40
BHD
-
BWI
1 stop15h 00m
American Airlines
Tue 11/816:25
BWI
-
BHD
2 stops17h 55m
American Airlines
Deal found 24/4£673
Tue 9/622:30
BFS
-
IAD
3 stops27h 05m
Multiple Airlines
Tue 16/608:18
IAD
-
BFS
3 stops27h 02m
Multiple Airlines
Deal found 25/4£682
Fri 5/606:30
BHD
-
IAD
1 stop16h 00m
British Airways
Tue 16/619:20
IAD
-
BHD
1 stop10h 25m
British Airways
Deal found 24/4£708
Thu 21/506:20
BFS
-
IAD
3 stops37h 50m
Multiple Airlines
Thu 28/520:30
IAD
-
BFS
2 stops18h 00m
Multiple Airlines
Deal found 23/4£710
Tue 23/609:40
BHD
-
IAD
1 stop15h 40m
American Airlines
Tue 11/817:34
IAD
-
BHD
2 stops16h 46m
American Airlines
Deal found 24/4£712
Thu 21/520:05
BFS
-
DCA
2 stops24h 34m
Multiple Airlines
Thu 28/506:00
DCA
-
BFS
3 stops31h 55m
Multiple Airlines
Deal found 23/4£716
Tue 26/507:00
BHD
-
DCA
3 stops30h 53m
Multiple Airlines
Tue 2/606:00
DCA
-
BHD
3 stops30h 50m
Multiple Airlines
Deal found 27/4£721
Thu 1/1012:45
BHD
-
BWI
1 stop11h 55m
British Airways
Mon 5/1021:30
BWI
-
BHD
1 stop13h 00m
British Airways
Deal found 23/4£724
Tue 23/606:30
BHD
-
DCA
2 stops15h 43m
American Airlines
Tue 11/814:59
DCA
-
BHD
2 stops14h 46m
American Airlines
Deal found 25/4£726

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 28 April 2026.

Round-trip from

£617

One-way from

£415
7/6-14/6
  • 7/6-14/6
  • 5 total stops
  • 66h 35m total
  • Belfast to Washington, D.C.
Search Deals
11/8
  • 11/8
  • 3 total stops
  • 31h 35m 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 28 April 2026.
Use the filters below to find and compare flights from Belfast to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 7/6

22:10-15:10

3 stops46h 00m

Washington, D.C. Dulles Intl

Sun 14/6

17:15-18:50

2 stops20h 35m

£617

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 26/5

07:35-15:10

3 stops36h 35m

Washington, D.C. Dulles Intl

Tue 2/6

17:15-19:40

2 stops21h 25m

£659

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 5/6

07:35-19:00

3 stops40h 25m

Washington, D.C. Dulles Intl

Tue 16/6

08:18-16:20

3 stops27h 02m

£671

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 23/6

09:40-19:40

1 stop15h 00m

Baltimore/Washington

Tue 11/8

16:25-15:20

2 stops17h 55m

£673

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 9/6

22:30-20:35

3 stops27h 05m

Washington, D.C. Dulles Intl

Tue 16/6

08:18-16:20

3 stops27h 02m

£682
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 5/6

06:30-17:30

1 stop16h 00m

Washington, D.C. Dulles Intl

Tue 16/6

19:20-10:45

1 stop10h 25m

£708

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 21/5

06:20-15:10

3 stops37h 50m

Washington, D.C. Dulles Intl

Thu 28/5

20:30-19:30

2 stops18h 00m

£710

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:40-20:20

1 stop15h 40m

Washington, D.C. Dulles Intl

Tue 11/8

17:34-15:20

2 stops16h 46m

£712

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 21/5

20:05-15:39

2 stops24h 34m

Washington, D.C. Reagan-National

Thu 28/5

06:00-18:55

3 stops31h 55m

£716

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 26/5

07:00-08:53

3 stops30h 53m

Washington, D.C. Reagan-National

Tue 2/6

06:00-17:50

3 stops30h 50m

£721

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 46 resultsSorted by cheapest first
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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 15h. Airlines will cover a distance of 3348 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 Intl - Baltimore/Washington, Belfast Intl - Washington, D.C. Reagan-National 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
Gaithersburg
Woodbridge
Arlington
Alexandria

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 Reagan-National flights
Belfast Intl to Dulles Intl flights
Belfast City to Dulles Intl 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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