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$347+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
May 11 — May 181
Mon 5/11
Mon 5/18
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 April 11, 2026.

This Mytrip deal was found by Cheapflights users on 4/6. 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 5/58:30 pm
IAD
-
BFS
3 stops18h 20m
Multiple Airlines
Tue 5/128:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 4/6$757
This Mytrip deal was found by Cheapflights users on 4/6. 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 4/258:30 pm
IAD
-
BFS
2 stops21h 55m
Multiple Airlines
Sun 5/310:10 pm
BFS
-
IAD
3 stops46h 00m
Multiple Airlines
Deal found 4/6$790
This Trip.com deal was found by Cheapflights users on 4/11. 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 4/278:30 pm
IAD
-
BFS
2 stops17h 20m
Multiple Airlines
Fri 5/19:30 pm
BFS
-
IAD
2 stops50h 50m
Multiple Airlines
Deal found 4/11$839
This Mytrip deal was found by Cheapflights users on 4/6. 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 11/127:40 pm
BWI
-
BFS
3 stops20h 25m
Multiple Airlines
Tue 11/176:25 pm
BFS
-
BWI
3 stops29h 15m
Multiple Airlines
Deal found 4/6$851
This Mytrip deal was found by Cheapflights users on 4/6. 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 11/125:25 pm
IAD
-
BFS
2 stops23h 55m
Multiple Airlines
Tue 11/178:55 pm
BFS
-
IAD
3 stops47h 20m
Multiple Airlines
Deal found 4/6$856
This Mytrip deal was found by Cheapflights users on 4/8. 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 4/161:20 pm
IAD
-
BFS
2 stops29h 05m
Multiple Airlines
Mon 4/206:50 pm
BFS
-
IAD
2 stops30h 00m
Multiple Airlines
Deal found 4/8$911
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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.
Wed 8/199:30 pm
IAD
-
BHD
1 stop11h 05m
British Airways
Wed 8/2610:05 am
BHD
-
IAD
1 stop14h 35m
British Airways
Deal found 4/10$955
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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.
Wed 8/197:25 pm
BWI
-
BHD
1 stop13h 10m
British Airways
Wed 8/2610:05 am
BHD
-
BWI
1 stop12h 10m
British Airways
Deal found 4/10$955
This Mytrip deal was found by Cheapflights users on 4/6. 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 5/193:45 pm
IAD
-
BFS
3 stops19h 35m
Multiple Airlines
Mon 5/259:05 pm
BFS
-
IAD
3 stops47h 05m
Multiple Airlines
Deal found 4/6$960
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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.
Tue 5/55:35 pm
IAD
-
BHD
1 stop10h 25m
British Airways
Tue 5/121:45 pm
BHD
-
IAD
1 stop11h 35m
British Airways
Deal found 4/6$965
This British Airways deal was found by Cheapflights users on 4/8. 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 10/187:15 pm
IAD
-
BHD
1 stop10h 15m
British Airways
Wed 10/218:35 pm
BHD
-
IAD
1 stop25h 50m
British Airways
Deal found 4/8$974
This Mytrip deal was found by Cheapflights users on 4/8. 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 4/278:30 pm
BWI
-
BFS
3 stops21h 50m
Multiple Airlines
Fri 5/17:20 pm
BFS
-
BWI
2 stops29h 05m
Multiple Airlines
Deal found 4/8$977

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 April 11, 2026.

Round-trip from

$757
(Mytrip)

One-way from

$347
(Trip.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 April 11, 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

Tue 5/5

8:30 pm-7:50 pm

3 stops18h 20m

Belfast Intl

Tue 5/12

8:15 pm-3:10 pm

3 stops47h 55m

$757
Quickest round-trip

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 8/19

7:25 pm-1:35 pm

1 stop13h 10m

Belfast City

Wed 8/26

10:05 am-5:15 pm

1 stop12h 10m

$955

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/19

3:45 pm-4:20 pm

3 stops19h 35m

Belfast Intl

Mon 5/25

9:05 pm-3:10 pm

3 stops47h 05m

$960

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 4/25

1:20 pm-11:25 pm

2 stops29h 05m

Belfast Intl

Sun 5/3

7:00 am-11:35 am

2 stops33h 35m

$973

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Mon 4/27

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Fri 5/1

7:20 pm-7:25 pm

2 stops29h 05m

$977

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Mon 5/25

6:59 am-12:30 pm

2 stops24h 31m

Belfast Intl

Mon 6/1

6:40 am-10:28 pm

2 stops20h 48m

$979

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 5/4

10:25 pm-5:30 pm

1 stop14h 05m

Belfast City

Mon 5/11

7:35 pm-8:20 pm

1 stop29h 45m

$983

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 5/4

9:30 pm-3:30 pm

1 stop13h 00m

Belfast City

Mon 5/11

7:35 pm-7:40 pm

1 stop29h 05m

$983

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 5/6

9:30 pm-3:40 pm

1 stop13h 10m

Belfast City

Wed 5/13

4:05 pm-7:40 pm

1 stop32h 35m

$988

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sat 4/25

8:30 pm-8:35 pm

2 stops19h 05m

Belfast City

Sun 5/3

7:00 am-7:25 pm

2 stops17h 25m

$989

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 46 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 April 11, 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
7,871 reviews

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.7

Entertainment

6.4

Boarding

6.9

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
7,871 reviews
British Airways
6.7
Okay
7,871 reviews

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.7

Entertainment

6.4

Boarding

6.9

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 13h 10m. The time it takes to get you to your destination can typically vary by up to 4h 30m. The distance between Washington, D.C. and Belfast is about 3348 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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$652Average$830FlexibilityNo cancel feeOn-time70%

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