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$338+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheap 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 March 28, 2026.

This Mytrip deal was found by Cheapflights users on 3/26. 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 5/108:30 pm
IAD
-
BFS
2 stops20h 00m
Multiple Airlines
Sun 5/178:20 pm
BFS
-
IAD
3 stops47h 50m
Multiple Airlines
Deal found 3/26$725
This Mytrip deal was found by Cheapflights users on 3/25. 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.
Sat 5/98:30 pm
IAD
-
BFS
2 stops19h 10m
Multiple Airlines
Sat 5/167:40 am
BFS
-
IAD
3 stops35h 35m
Multiple Airlines
Deal found 3/25$759
This Mytrip deal was found by Cheapflights users on 3/25. 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.
Sat 5/98:30 pm
BWI
-
BFS
2 stops19h 10m
Multiple Airlines
Sat 5/167:40 am
BFS
-
BWI
3 stops19h 35m
Multiple Airlines
Deal found 3/25$768
This Mytrip deal was found by Cheapflights users on 3/23. 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 5/78:30 pm
BWI
-
BFS
3 stops21h 30m
Multiple Airlines
Thu 5/146:40 am
BFS
-
BWI
3 stops20h 35m
Multiple Airlines
Deal found 3/23$840
This Mytrip deal was found by Cheapflights users on 3/23. 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 5/78:20 pm
IAD
-
BFS
2 stops21h 30m
Multiple Airlines
Thu 5/144:40 pm
BFS
-
IAD
2 stops29h 20m
Multiple Airlines
Deal found 3/23$905
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:15 pm
IAD
-
BHD
1 stop10h 15m
British Airways
Thu 9/109:35 am
BHD
-
IAD
1 stop11h 15m
British Airways
Deal found 3/24$906
This oojo deal was found by Cheapflights users on 3/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:40 pm
IAD
-
BHD
1 stop10h 20m
British Airways
Wed 9/210:05 am
BHD
-
IAD
1 stop14h 35m
British Airways
Deal found 3/23$921
This British Airways deal was found by Cheapflights users on 3/24. 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.
Mon 8/247:15 pm
IAD
-
BHD
1 stop12h 40m
British Airways
Fri 9/116:30 am
BHD
-
IAD
1 stop15h 55m
British Airways
Deal found 3/24$926
This British Airways deal was found by Cheapflights users on 3/23. 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.
Sun 8/239:35 pm
BWI
-
BHD
1 stop12h 00m
British Airways
Wed 9/26:30 am
BHD
-
BWI
1 stop15h 45m
British Airways
Deal found 3/23$926
This oojo deal was found by Cheapflights users on 3/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:54 pm
DCA
-
BHD
2 stops17h 41m
British Airways
Mon 10/127:35 pm
BHD
-
DCA
2 stops27h 52m
British Airways
Deal found 3/24$927
This Mytrip deal was found by Cheapflights users on 3/26. 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 5/108:30 pm
BWI
-
BFS
2 stops20h 00m
Multiple Airlines
Sun 5/177:10 am
BFS
-
BWI
2 stops17h 15m
Multiple Airlines
Deal found 3/26$931
This oojo deal was found by Cheapflights users on 3/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:15 pm
IAD
-
BHD
1 stop12h 15m
British Airways
Wed 5/64:05 pm
BHD
-
IAD
1 stop30h 20m
British Airways
Deal found 3/23$935

Find 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 March 28, 2026.

Round-trip from

$725
(Mytrip)

One-way from

$316
(Kiwi.com)
From Washington, D.C. (WAS) to Belfast
Search Deals
One-way flight from Washington, D.C. (WAS) to Belfast
Search Deals

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 March 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 5/10

8:30 pm-9:30 pm

2 stops20h 00m

Belfast Intl

Sun 5/17

8:20 pm-3:10 pm

3 stops47h 50m

$725

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 5/9

8:30 pm-8:40 pm

2 stops19h 10m

Belfast Intl

Sat 5/16

7:40 am-2:15 pm

3 stops35h 35m

$759

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sat 5/9

8:30 pm-8:40 pm

2 stops19h 10m

Belfast Intl

Sat 5/16

7:40 am-10:15 pm

3 stops19h 35m

$768

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Thu 5/7

8:30 pm-11:00 pm

3 stops21h 30m

Belfast Intl

Thu 5/14

6:40 am-10:15 pm

3 stops20h 35m

$840

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 5/7

8:20 pm-10:50 pm

2 stops21h 30m

Belfast Intl

Thu 5/14

4:40 pm-5:00 pm

2 stops29h 20m

$905

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 8/25

5:40 pm-10:45 am

1 stop12h 05m

Belfast City

Wed 9/9

10:05 am-7:40 pm

1 stop14h 35m

$926

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 9/2

2:54 pm-1:35 pm

2 stops17h 41m

Belfast City

Mon 10/12

7:35 pm-6:27 pm

2 stops27h 52m

$927

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sun 5/10

8:30 pm-9:30 pm

2 stops20h 00m

Belfast Intl

Sun 5/17

7:10 am-7:25 pm

2 stops17h 15m

$931
Quickest round-trip

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 4/26

9:35 pm-1:25 pm

1 stop10h 50m

Belfast City

Fri 5/8

9:35 am-7:40 pm

1 stop15h 05m

$940

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 4/26

10:15 pm-7:35 am

1 stop28h 20m

Belfast City

Thu 5/7

7:30 pm-3:45 pm

1 stop25h 15m

$951

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 37 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 March 28, 2026.
Peruse reviews from past customers who have flown with 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.
British Airways
6.7
Okay
7,825 reviews

Food

6.4

Boarding

6.9

Overall

6.7

Crew

7.6

Entertainment

6.4

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance
British Airways
6.7
Okay
7,825 reviews
British Airways
6.7
Okay
7,825 reviews

Food

6.4

Boarding

6.9

Overall

6.7

Crew

7.6

Entertainment

6.4

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance

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 and KLM fly from Washington, D.C. to Belfast in about 10h 15m. The time it takes to get you to your destination can typically vary by up to 4h 20m. 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 $652.

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

    Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Dulles Intl - Belfast City or Baltimore/Washington - 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.

See more FAQs

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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

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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$652Average$861FlexibilityNo cancel feeOn-time70%

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