Washington, D.C.

$663+ Cheap flights from Belfast Intl (BFS) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
Oct 22 — Oct 291
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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 September 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$663
(Mytrip)
Provider with most accurate pricing for Belfast Intl-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Belfast Intl-Washington, D.C. (WAS) flights.
From Belfast Intl to Washington, D.C. (WAS)

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

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 September 22, 2025.

This Mytrip deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:45 pmBFS - IAD
3 stops30h 15mMultiple Airlines
Thu 11/135:30 pmIAD - BFS
3 stops21h 55mMultiple Airlines
Deal found 9/22$663
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:30 amBFS - IAD
2 stops17h 00mMultiple Airlines
Wed 11/127:40 pmIAD - BFS
2 stops21h 40mMultiple Airlines
Deal found 9/21$670
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:30 amBFS - BWI
2 stops17h 10mMultiple Airlines
Wed 11/127:40 pmBWI - BFS
2 stops21h 40mMultiple Airlines
Deal found 9/21$766

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 22, 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

Thu 11/6

6:30 am-6:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

Thu 11/13

7:40 pm-10:20 pm

2 stops21h 40m

$692

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 11/5

7:40 am-3:15 pm

3 stops36h 35m

Washington, D.C. Dulles Intl

Wed 11/12

10:30 pm-7:35 pm

2 stops16h 05m

$701

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Wed 11/5

6:30 am-6:40 pm

2 stops17h 10m

Baltimore/Washington

Wed 11/12

7:40 pm-10:20 pm

2 stops21h 40m

$766

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/22

Compare providers for flights from Belfast Intl to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Belfast Intl to Washington, D.C. in September.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Belfast Intl Airport-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Belfast Intl Airport-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Belfast Intl Airport-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Belfast Intl Airport-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Belfast Intl Airport-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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.?

  • 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 vacation 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.

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

    Currently, August is the cheapest month in which you can book a flight from Belfast Intl Airport to Washington, D.C. (average of $241). Flying from Belfast Intl Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Laurel
Manassas
Hanover
Oxon Hill
Towson
National Harbor
Dundalk
Waldorf

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