Find flights
When to book
FAQs

Cheap flights from Belfast to Washington, D.C. from £285

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — WAS
31 Aug — 7 Sep1
1 adult

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 26 August 2025.

Round-trip from

£466

One-way from

£285
7/10-14/10
  • 7/10-14/10
  • 6 total stops
  • 60h 25m total
  • Belfast to Washington, D.C.
Search Deals
22/9
  • 22/9
  • 3 total stops
  • 47h 20m total
  • Belfast to Washington, D.C.
Search Deals

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

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 26 August 2025.

Tue 7/1007:25BFS - IAD
3 stops36h 55mMultiple Airlines
Tue 14/1017:00IAD - BFS
3 stops23h 30mMultiple Airlines
Deal found 23/8£466
Thu 20/1111:05BHD - IAD
1 stop13h 50mAmerican Airlines
Mon 24/1116:34IAD - BHD
2 stops18h 31mAmerican Airlines
Deal found 22/8£565
Thu 4/1209:05BHD - DCA
2 stops16h 06mAmerican Airlines
Mon 8/1215:59DCA - BHD
2 stops13h 41mAmerican Airlines
Deal found 22/8£569
Sat 6/906:30BHD - DCA
2 stops16h 44mKLM
Tue 9/916:45DCA - BHD
2 stops19h 10mKLM
Deal found 23/8£583
Tue 14/1006:30BHD - DCA
2 stops15h 40mMultiple Airlines
Mon 20/1018:45DCA - BHD
2 stops15h 55mMultiple Airlines
Deal found 23/8£3,622
Tue 14/1006:30BHD - IAD
2 stops17h 48mVirgin Atlantic
Mon 20/1017:25IAD - BHD
1 stop18h 30mVirgin Atlantic
Deal found 23/8£3,661
Tue 14/1009:35BHD - IAD
1 stop15h 40mAer Lingus
Mon 20/1022:45IAD - BHD
1 stop11h 55mAer Lingus
Deal found 23/8£3,707
Wed 15/1020:15BHD - IAD
1 stop24h 40mFinnair
Tue 21/1017:50IAD - BHD
1 stop11h 45mFinnair
Deal found 23/8£3,813
Sat 11/1010:15BHD - IAD
2 stops16h 55mMultiple Airlines
Sun 19/1022:45IAD - BHD
1 stop10h 55mMultiple Airlines
Deal found 23/8£4,131
Fri 17/1006:45BHD - IAD
2 stops17h 35mMultiple Airlines
Sun 19/1022:45IAD - BHD
1 stop10h 55mMultiple Airlines
Deal found 23/8£4,133
Sat 11/1010:15BHD - IAD
2 stops16h 55mMultiple Airlines
Sat 18/1022:50IAD - BHD
1 stop11h 15mMultiple Airlines
Deal found 23/8£4,159
Fri 17/1006:45BHD - IAD
2 stops17h 35mMultiple Airlines
Sat 18/1022:50IAD - BHD
1 stop11h 15mMultiple Airlines
Deal found 23/8£4,160

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 26 August 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

Tue 7/10

07:25-15:20

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 14/10

17:00-21:30

3 stops23h 30m

£466

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

15:05-15:35

1 stop29h 30m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-14:15

1 stop11h 30m

£565

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

09:05-20:11

2 stops16h 06m

Washington, D.C. Reagan-National

Mon 8/12

15:59-10:40

2 stops13h 41m

£569

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sat 6/9

06:30-18:14

2 stops16h 44m

Washington, D.C. Reagan-National

Tue 9/9

16:45-16:55

2 stops19h 10m

£583

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 14/10

06:30-17:10

2 stops15h 40m

Washington, D.C. Reagan-National

Mon 20/10

18:45-15:40

2 stops15h 55m

£3,622

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

06:30-19:18

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 20/10

17:25-16:55

1 stop18h 30m

£3,661

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

06:30-19:18

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 20/10

17:10-16:55

2 stops18h 45m

£3,661

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

09:35-20:15

1 stop15h 40m

Washington, D.C. Dulles Intl

Mon 20/10

22:45-15:40

1 stop11h 55m

£3,707

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 15/10

20:15-15:55

1 stop24h 40m

Washington, D.C. Dulles Intl

Tue 21/10

17:50-10:35

1 stop11h 45m

£3,813

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 22/9

21:00-15:20

3 stops47h 20m

£285

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 18 results
1
2

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 26 August 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 at midday, which can drop the price by up to 18% versus a flight in the morning.

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 44m. Airlines will cover a distance of 3378 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 - Washington, D.C. Dulles Intl, Belfast City - Washington, D.C. Reagan-National or Belfast City - Washington, D.C. Dulles Intl 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.

  • What is the cheapest month to book a flight from Belfast to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from Belfast to Washington, D.C. (average of £599). Flying from Belfast to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
College Park
Laurel
Tysons

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

Top airline flying from Belfast to Washington, D.C.

Discover the top airline that operate flights from Belfast to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 August 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£608Average£721FlexibilityNo cancel feeOn-time70%
Search British Airways 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.

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.