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Belfast Intl

$293+ Cheap flights from Washington, D.C. (WAS) to Belfast Intl (BFS)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BFS
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Find flight deals from Washington, D.C. to Belfast Intl

Cheapest flights from Washington, D.C. to Belfast Intl
Explore the most affordable flight options available from Washington, D.C. to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Trip.com deal was found by Cheapflights users on 11/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:20 pmIAD - BFS
1 stop17h 00mMultiple Airlines
Tue 12/238:55 pmBFS - IAD
1 stop28h 35mMultiple Airlines
Deal found 11/2$614
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Mon 12/155:05 pmIAD - BFS
2 stops13h 35mMultiple Airlines
Mon 12/227:20 amBFS - IAD
2 stops17h 10mMultiple Airlines
Deal found 11/1$1,130
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Mon 12/157:40 pmBWI - BFS
2 stops21h 00mMultiple Airlines
Mon 12/228:40 amBFS - BWI
2 stops15h 00mMultiple Airlines
Deal found 11/1$1,172
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Tue 12/164:10 pmDCA - BFS
3 stops16h 15mMultiple Airlines
Tue 12/236:30 amBFS - DCA
3 stops18h 15mMultiple Airlines
Deal found 11/1$1,424

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Belfast Intl (BFS). 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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$553
(Trip.com)

One-way from

$293
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$705
Provider with most accurate pricing for Washington, D.C. (WAS)-Belfast Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Belfast Intl flights.
Search Deals
From Washington, D.C. (WAS) to Belfast Intl
Search Deals
One-way flight from Washington, D.C. (WAS) to Belfast Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Belfast Intl 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 November 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Belfast Intl Airport that are best for you.

Fly from

Washington, D.C.

Fly to

Belfast Intl

Route

Depart

Return

Price

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sun 3/22

8:40 pm-8:10 pm

2 stops19h 30m

Belfast Intl

Sun 3/29

7:00 am-7:25 pm

2 stops41h 25m

$553

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 12/8

10:20 pm-8:20 pm

1 stop17h 00m

Belfast Intl

Tue 12/23

8:55 pm-8:30 pm

1 stop28h 35m

$614

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 3/22

7:20 pm-8:10 pm

1 stop20h 50m

Belfast Intl

Sun 3/29

7:00 am-8:20 pm

1 stop18h 20m

$807

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 12/15

5:05 pm-11:40 am

2 stops13h 35m

Belfast Intl

Mon 12/22

7:20 am-7:30 pm

2 stops17h 10m

$1,130

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Mon 12/15

7:40 pm-9:40 pm

2 stops21h 00m

Belfast Intl

Mon 12/22

8:40 am-6:40 pm

2 stops15h 00m

$1,172

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sat 3/28

11:35 pm-7:00 pm

2 stops14h 25m

Belfast Intl

Sun 4/5

7:10 am-7:25 pm

3 stops17h 15m

$1,371

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 12/16

4:10 pm-1:25 pm

3 stops16h 15m

Belfast Intl

Tue 12/23

6:30 am-7:45 pm

3 stops18h 15m

$1,424

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 3/5

5:30 pm-9:05 pm

3 stops22h 35m

$293

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Thu 3/5

6:42 pm-11:55 am

3 stops36h 13m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

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

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 Washington, D.C. to Belfast Intl in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Washington, D.C.-Belfast Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Belfast Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Belfast Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Belfast Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C.-Belfast Intl Airport 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 Washington, D.C. to Belfast Intl

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

How much does it cost to fly round-trip from Washington, D.C. to Belfast Intl Airport?

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast Intl. Reviews last updated November 3, 2025.
Get a feel of what it's like to fly with British Airways from Washington, D.C. to Belfast Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,494 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,494 reviews
British Airways
6.7
Okay
7,494 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Washington, D.C. to Belfast Intl Airport round-trip?

    British Airways, at $627, was found to be the cheapest airline from Washington, D.C. to Belfast Intl Airport.. This flight start at 20% lower than the current average price 3 months from now.

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

    Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Baltimore/Washington - Belfast Intl or Washington, D.C. Reagan-National - Belfast Intl when deciding on the best route from Washington, D.C. to Belfast Intl Airport.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Belfast Intl.

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

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

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Alternative routes for Washington, D.C. to Belfast Intl

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

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

Discover the top airline that operate flights from Washington, D.C. to Belfast Intl. 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 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$627Average$875FlexibilityNo cancel feeOn-time70%

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