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$275+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Aug 2 — Aug 91
Sun 8/2
Sun 8/9
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 July 3, 2026.

This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 8/268:30 pm
IAD
-
BFS
3 stops21h 45m
Multiple Airlines
Mon 8/318:40 am
BFS
-
IAD
3 stops35h 30m
Multiple Airlines
Deal found 6/28$786
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 8/129:45 am
IAD
-
BFS
3 stops28h 30m
Multiple Airlines
Wed 8/198:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 6/28$848
This Mytrip deal was found by Cheapflights users on 6/29. 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.
Wed 9/168:30 pm
IAD
-
BFS
2 stops15h 35m
Multiple Airlines
Tue 9/292:50 pm
BFS
-
IAD
2 stops33h 35m
Multiple Airlines
Deal found 6/29$857
This Mytrip deal was found by Cheapflights users on 6/29. 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 7/198:30 pm
IAD
-
BFS
3 stops21h 40m
Multiple Airlines
Wed 7/2210:45 pm
BFS
-
IAD
3 stops27h 28m
Multiple Airlines
Deal found 6/29$880
This Mytrip deal was found by Cheapflights users on 6/29. 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 8/165:40 pm
IAD
-
BFS
2 stops23h 10m
Multiple Airlines
Sun 8/3010:10 pm
BFS
-
IAD
3 stops46h 00m
Multiple Airlines
Deal found 6/29$885
This Mytrip deal was found by Cheapflights users on 6/29. 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 10/298:40 pm
IAD
-
BFS
2 stops18h 30m
Multiple Airlines
Sun 11/87:45 am
BFS
-
IAD
3 stops36h 30m
Multiple Airlines
Deal found 6/29$909
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Wed 8/1210:35 pm
IAD
-
BFS
2 stops17h 30m
Multiple Airlines
Mon 8/248:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 6/30$911
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Wed 8/124:20 pm
IAD
-
BHD
2 stops16h 00m
Multiple Airlines
Mon 8/246:50 am
BHD
-
IAD
3 stops37h 20m
Multiple Airlines
Deal found 6/30$925
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 8/264:20 pm
IAD
-
BHD
2 stops14h 30m
Multiple Airlines
Mon 8/317:00 am
BHD
-
IAD
2 stops17h 25m
Multiple Airlines
Deal found 6/28$939
This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:45 pm
IAD
-
BHD
1 stop11h 15m
British Airways
Sun 11/89:10 am
BHD
-
IAD
1 stop11h 25m
British Airways
Deal found 6/29$960
This Mytrip deal was found by Cheapflights users on 6/29. 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.
Wed 9/168:28 am
IAD
-
BHD
2 stops25h 02m
Multiple Airlines
Tue 9/297:00 am
BHD
-
IAD
2 stops17h 35m
Multiple Airlines
Deal found 6/29$963
This British Airways deal was found by Cheapflights users on 6/29. 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 9/2810:25 pm
IAD
-
BHD
1 stop14h 05m
British Airways
Fri 10/212:00 pm
BHD
-
IAD
1 stop13h 20m
British Airways
Deal found 6/29$973

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 July 3, 2026.

Round-trip from

$786
(Mytrip)

One-way from

$275
(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 July 3, 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

Wed 8/26

8:30 pm-11:15 pm

3 stops21h 45m

Belfast Intl

Mon 8/31

8:40 am-3:10 pm

3 stops35h 30m

$786

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 8/12

9:45 am-7:15 pm

3 stops28h 30m

Belfast Intl

Wed 8/19

8:15 pm-3:10 pm

3 stops47h 55m

$848

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 8/16

4:20 pm-6:25 pm

2 stops21h 05m

Belfast Intl

Sun 8/30

10:10 pm-3:10 pm

3 stops46h 00m

$884

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 9/16

8:30 pm-5:05 pm

2 stops15h 35m

Belfast Intl

Tue 9/29

6:20 pm-10:15 pm

3 stops32h 55m

$891

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/29

8:40 pm-7:10 pm

2 stops18h 30m

Belfast Intl

Sun 11/8

7:45 am-3:15 pm

3 stops36h 30m

$909

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 8/16

10:35 pm-9:50 pm

2 stops18h 15m

Belfast Intl

Sat 8/22

7:40 am-7:20 pm

3 stops40h 40m

$970

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 11/16

8:35 pm-4:05 pm

1 stop14h 30m

Belfast City

Thu 11/19

3:05 pm-6:45 pm

1 stop32h 40m

$973

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 9/28

10:25 pm-5:30 pm

1 stop14h 05m

Belfast City

Fri 10/2

12:00 pm-8:20 pm

1 stop13h 20m

$974

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Thu 11/5

8:35 pm-2:00 pm

1 stop12h 25m

Belfast City

Tue 11/10

6:35 am-6:45 pm

1 stop17h 10m

$999

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 9/3

5:15 pm-6:55 pm

2 stops20h 40m

Belfast Intl

Mon 9/7

6:30 am-3:45 pm

2 stops14h 15m

$1,007

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 49 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 July 3, 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
8,091 reviews

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,091 reviews
British Airways
6.7
Okay
8,091 reviews

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

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 KLM fly from Washington, D.C. to Belfast in about 13h 25m. The time it takes to get you to your destination can typically vary by up to 2h 30m. The distance between Washington, D.C. and Belfast is about 3378 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, Baltimore/Washington - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City 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

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

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 July 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$652Average$931FlexibilityNo cancel feeOn-time70%

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