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Belfast Intl

$547+ Cheap flights from Washington, D.C. (WAS) to Belfast Intl (BFS)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BFS
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap 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 February 4, 2026.

This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:40 pm
IAD
-
BFS
2 stops17h 15m
Multiple Airlines
Thu 3/126:30 am
BFS
-
IAD
2 stops17h 00m
Multiple Airlines
Deal found 2/1$547
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:40 pm
BWI
-
BFS
2 stops21h 40m
Multiple Airlines
Tue 3/107:05 am
BFS
-
BWI
2 stops16h 35m
Multiple Airlines
Deal found 2/1$681
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sun 5/38:30 pm
IAD
-
BFS
2 stops20h 00m
Multiple Airlines
Fri 5/88:55 am
BFS
-
IAD
2 stops15h 25m
Multiple Airlines
Deal found 2/3$722
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sun 5/38:30 pm
BWI
-
BFS
2 stops20h 00m
Multiple Airlines
Fri 5/88:55 am
BFS
-
BWI
2 stops15h 30m
Multiple Airlines
Deal found 2/3$722
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Fri 3/206:05 pm
IAD
-
BFS
2 stops17h 05m
Multiple Airlines
Fri 3/279:00 pm
BFS
-
IAD
2 stops27h 30m
Multiple Airlines
Deal found 2/3$824
This Booking.com deal was found by Cheapflights users on 2/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/218:40 pm
IAD
-
BFS
2 stops12h 50m
Multiple Airlines
Sat 3/287:00 am
BFS
-
IAD
2 stops16h 30m
Multiple Airlines
Deal found 2/4$890
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:40 pm
BWI
-
BFS
2 stops21h 55m
Multiple Airlines
Thu 3/268:25 am
BFS
-
BWI
2 stops15h 15m
Multiple Airlines
Deal found 2/2$1,052
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Fri 3/208:40 pm
BWI
-
BFS
2 stops12h 25m
Multiple Airlines
Fri 3/2710:35 am
BFS
-
BWI
2 stops13h 05m
Multiple Airlines
Deal found 2/3$1,126
This Booking.com deal was found by Cheapflights users on 2/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/218:40 pm
BWI
-
BFS
2 stops19h 15m
Multiple Airlines
Sat 3/289:40 am
BFS
-
BWI
2 stops16h 50m
Multiple Airlines
Deal found 2/4$1,198
This Booking.com deal was found by Cheapflights users on 2/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/227:40 pm
BWI
-
BFS
3 stops17h 45m
Multiple Airlines
Mon 3/98:35 am
BFS
-
BWI
2 stops15h 05m
Multiple Airlines
Deal found 2/3$1,307

Find 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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$547
(Trip.com)
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

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 February 4, 2026.
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

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-5:55 pm

2 stops17h 15m

Belfast Intl

Thu 3/12

6:30 am-7:30 pm

2 stops17h 00m

$547

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Thu 3/5

7:40 pm-10:20 pm

2 stops21h 40m

Belfast Intl

Tue 3/10

7:05 am-7:40 pm

2 stops16h 35m

$681

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 5/3

8:30 pm-9:30 pm

2 stops20h 00m

Belfast Intl

Fri 5/8

8:55 am-7:20 pm

2 stops15h 25m

$722

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sun 5/3

8:30 pm-9:30 pm

2 stops20h 00m

Belfast Intl

Fri 5/8

8:55 am-7:25 pm

2 stops15h 30m

$722

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 3/20

6:05 pm-3:10 pm

2 stops17h 05m

Belfast Intl

Fri 3/27

9:00 pm-8:30 pm

2 stops27h 30m

$824

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 3/21

8:40 pm-1:30 pm

2 stops12h 50m

Belfast Intl

Sat 3/28

7:00 am-7:30 pm

2 stops16h 30m

$890

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Thu 3/19

8:40 pm-10:35 pm

2 stops21h 55m

Belfast Intl

Thu 3/26

8:25 am-7:40 pm

2 stops15h 15m

$1,052

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Fri 3/20

8:40 pm-1:05 pm

2 stops12h 25m

Belfast Intl

Fri 3/27

10:35 am-7:40 pm

2 stops13h 05m

$1,126

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sat 3/21

8:40 pm-7:55 pm

2 stops19h 15m

Belfast Intl

Sat 3/28

9:40 am-10:30 pm

2 stops16h 50m

$1,198

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 7/14

8:30 pm-10:15 pm

2 stops20h 45m

Belfast Intl

Thu 7/23

5:45 am-7:00 pm

2 stops18h 15m

$1,232

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 12 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Belfast Intl Airport flight deals on Cheapflights vs. FlightHub >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 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 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
No data available for this route at this time. Please check back soon.

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 February 4, 2026.
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
7,715 reviews

Overall

6.7

Food

6.4

Boarding

6.9

Comfort

6.8

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,715 reviews
British Airways
6.7
Okay
7,715 reviews

Overall

6.7

Food

6.4

Boarding

6.9

Comfort

6.8

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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..

  • 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$627Average$875FlexibilityNo cancel feeOn-time70%

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