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$272+ Cheap flights from Washington, D.C. (WAS) to Belfast

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
ago. 25 — sep. 11
lun. 8/25
lun. 9/1
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Belfast (BF1). 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 agosto 20, 2025.

Round-trip from

$588
(Mytrip)

One-way from

$272
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$618
From Washington, D.C. (WAS) to Belfast
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One-way flight from Washington, D.C. (WAS) to Belfast
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Highest demand for flights based on searches. 22% potential increase in price ($217 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Washington, D.C. to Belfast

Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 20, 2025.

This Mytrip deal was found by Cheapflights users on 8/20. 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.
vie. 9/196:50 pmBWI - BFS
2 stops13h 40mMultiple Airlines
vie. 9/266:05 amBFS - BWI
2 stops16h 35mMultiple Airlines
Deal found 8/20$588
This Mytrip deal was found by Cheapflights users on 8/20. 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.
sáb. 10/46:50 pmBWI - BFS
2 stops23h 15mMultiple Airlines
sáb. 10/119:30 pmBFS - BWI
2 stops25h 10mMultiple Airlines
Deal found 8/20$601
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/17:20 pmIAD - BHD
1 stop11h 50mBritish Airways
dom. 11/96:30 amBHD - IAD
1 stop14h 05mBritish Airways
Deal found 8/20$626
This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/254:36 pmIAD - BHD
2 stops18h 04mBritish Airways
lun. 9/86:30 pmBHD - IAD
2 stops25h 30mBritish Airways
Deal found 8/18$631
This British Airways deal was found by Cheapflights users on 8/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:20 pmIAD - BHD
1 stop9h 50mBritish Airways
dom. 11/165:35 pmBHD - IAD
1 stop27h 00mBritish Airways
Deal found 8/19$632
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/145:50 pmIAD - BHD
1 stop10h 15mBritish Airways
dom. 9/218:05 pmBHD - IAD
2 stops27h 46mBritish Airways
Deal found 8/18$636
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1910:40 pmIAD - BHD
1 stop17h 05mAmerican Airlines
vie. 9/266:35 amBHD - IAD
1 stop18h 35mAmerican Airlines
Deal found 8/20$639
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/196:45 amDCA - BHD
2 stops21h 05mBritish Airways
dom. 9/218:05 pmBHD - DCA
2 stops25h 49mBritish Airways
Deal found 8/18$641
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/2610:40 pmIAD - BHD
1 stop14h 35mBritish Airways
lun. 9/296:40 amBHD - IAD
2 stops17h 11mBritish Airways
Deal found 8/18$655
This Mytrip deal was found by Cheapflights users on 8/18. 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.
jue. 10/210:20 pmIAD - BFS
3 stops18h 20mMultiple Airlines
jue. 10/99:25 amBFS - IAD
3 stops34h 55mMultiple Airlines
Deal found 8/18$655
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/266:41 pmBWI - BHD
2 stops18h 34mBritish Airways
lun. 9/296:40 amBHD - BWI
2 stops16h 07mBritish Airways
Deal found 8/18$656
This Mytrip deal was found by Cheapflights users on 8/18. 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.
vie. 9/265:00 pmIAD - BFS
3 stops24h 35mMultiple Airlines
lun. 9/299:55 pmBFS - IAD
3 stops46h 25mMultiple Airlines
Deal found 8/18$663

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Belfast 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 agosto 20, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Belfast that are best for you.

Fly from

Washington, D.C.

Fly to

Belfast

Route

Depart

Return

Price

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

vie. 9/19

6:50 pm-1:30 pm

2 stops13h 40m

Belfast Intl

vie. 9/26

6:05 am-5:40 pm

2 stops16h 35m

$588

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

sáb. 10/4

6:50 pm-11:05 pm

2 stops23h 15m

Belfast Intl

sáb. 10/11

9:30 pm-5:40 pm

2 stops25h 10m

$601

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

sáb. 11/1

7:20 pm-11:10 am

1 stop11h 50m

Belfast City

dom. 11/9

6:30 am-3:35 pm

1 stop14h 05m

$626

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

mié. 11/12

6:20 pm-10:15 am

1 stop10h 55m

Belfast City

dom. 11/16

12:10 pm-3:35 pm

1 stop32h 25m

$632

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

dom. 9/14

5:50 pm-9:05 am

1 stop10h 15m

Belfast City

dom. 9/21

8:05 pm-6:51 pm

2 stops27h 46m

$636

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

vie. 9/19

10:40 pm-8:45 pm

1 stop17h 05m

Belfast City

vie. 9/26

6:35 am-8:10 pm

1 stop18h 35m

$639

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

vie. 9/26

7:23 pm-3:30 pm

2 stops15h 07m

Belfast City

lun. 9/29

1:50 pm-11:07 pm

2 stops14h 17m

$641

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

vie. 9/19

6:45 am-8:50 am

2 stops21h 05m

Belfast City

dom. 9/21

8:05 pm-4:54 pm

2 stops25h 49m

$641

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

jue. 10/2

10:20 pm-9:40 pm

3 stops18h 20m

Belfast Intl

jue. 10/9

9:25 am-3:20 pm

3 stops34h 55m

$655

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

vie. 9/26

10:40 pm-6:15 pm

1 stop14h 35m

Belfast City

lun. 9/29

6:40 am-6:51 pm

2 stops17h 11m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 32 results
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Best time to book a flight from Washington, D.C. to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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

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

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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. Reviews last updated agosto 20, 2025.
Peruse reviews from past customers who have flown with American Airlines and British Airways from Washington, D.C. to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Comfort

7.2

Entertainment

6.9

Crew

8.0

Food

6.5

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Comfort

7.2

Entertainment

6.9

Crew

8.0

Food

6.5

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.
British Airways
6.7
Okay
7,289 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Comfort

7.2

Entertainment

6.9

Crew

8.0

Food

6.5

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Belfast. 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 Washington, D.C. to Belfast?

    Airlines like British Airways, American Airlines, and Virgin Atlantic fly from Washington, D.C. to Belfast in about 11h 50m. The time it takes to get you to your destination can typically vary by up to 6h 45m. The distance between Washington, D.C. and Belfast is about 3390 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Washington, D.C. to Belfast round-trip from $620. You may be able to fly from Washington, D.C. to Belfast for 18% less than the average price by searching for this airline.

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

    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.

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

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

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

    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.

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of $657). Flying from Washington, D.C. to Belfast in June is currently the most expensive (average of $1,189). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Belfast

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

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

Discover the top airline that operate flights from Washington, D.C. to Belfast. 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 agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$620Average$847FlexibilityNo cancel feeOn-time70%

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