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$276+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 August 2, 2026.

This Mytrip deal was found by Cheapflights users on 8/2. 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.
Tue 9/111:20 pm
IAD
-
BFS
2 stops12h 00m
Multiple Airlines
Mon 9/78:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 8/2$770
This Mytrip deal was found by Cheapflights users on 7/31. 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 9/148:30 pm
IAD
-
BFS
2 stops14h 45m
Multiple Airlines
Mon 9/218:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 7/31$783
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Mon 11/167:40 pm
IAD
-
BFS
2 stops18h 30m
Multiple Airlines
Tue 11/248:25 am
BFS
-
IAD
3 stops41h 10m
Multiple Airlines
Deal found 7/29$792
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Sat 9/128:30 pm
IAD
-
BFS
2 stops21h 10m
Multiple Airlines
Wed 9/238:30 am
BFS
-
IAD
3 stops35h 40m
Multiple Airlines
Deal found 7/29$797
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Sun 9/208:30 pm
IAD
-
BFS
2 stops20h 20m
Multiple Airlines
Mon 10/58:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 7/28$800
This Mytrip deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:30 pm
IAD
-
BHD
2 stops19h 00m
Multiple Airlines
Tue 10/68:05 am
BHD
-
IAD
3 stops39h 55m
Multiple Airlines
Deal found 8/2$805
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/1211:20 pm
IAD
-
BFS
2 stops18h 20m
Multiple Airlines
Sat 9/199:40 pm
BFS
-
IAD
3 stops46h 30m
Multiple Airlines
Deal found 7/30$807
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Sun 11/17:40 pm
IAD
-
BFS
2 stops19h 50m
Multiple Airlines
Sun 11/87:00 am
BFS
-
IAD
3 stops37h 15m
Multiple Airlines
Deal found 7/28$821
This Mytrip deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:30 pm
IAD
-
BFS
2 stops20h 30m
Multiple Airlines
Mon 10/58:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 8/2$827
This Mytrip deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:30 pm
BWI
-
BFS
2 stops19h 10m
Multiple Airlines
Tue 10/610:30 am
BFS
-
BWI
2 stops13h 55m
Multiple Airlines
Deal found 8/2$870
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Mon 11/167:40 pm
BWI
-
BFS
2 stops18h 30m
Multiple Airlines
Tue 11/245:15 pm
BFS
-
BWI
3 stops30h 25m
Multiple Airlines
Deal found 7/29$874
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/128:30 pm
BWI
-
BFS
2 stops21h 10m
Multiple Airlines
Wed 9/237:35 am
BFS
-
BWI
2 stops16h 50m
Multiple Airlines
Deal found 7/30$877

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 August 2, 2026.

Round-trip from

$770
(Mytrip)

One-way from

$256
(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 August 2, 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 9/1

11:20 pm-4:20 pm

2 stops12h 00m

Belfast Intl

Mon 9/7

8:15 pm-3:10 pm

3 stops47h 55m

$770

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 9/14

8:30 pm-4:15 pm

2 stops14h 45m

Belfast Intl

Mon 9/21

8:15 pm-3:10 pm

3 stops47h 55m

$783

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 11/16

7:40 pm-7:10 pm

2 stops18h 30m

Belfast Intl

Tue 11/24

8:25 am-8:35 pm

3 stops41h 10m

$792

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 9/12

8:30 pm-10:40 pm

2 stops21h 10m

Belfast Intl

Wed 9/23

8:30 am-3:10 pm

3 stops35h 40m

$797

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 9/12

11:20 pm-10:40 pm

2 stops18h 20m

Belfast Intl

Sat 9/19

9:40 pm-3:10 pm

3 stops46h 30m

$807

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 11/1

7:40 pm-8:30 pm

2 stops19h 50m

Belfast Intl

Sun 11/8

7:00 am-3:15 pm

3 stops37h 15m

$821

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 9/21

8:30 pm-10:00 pm

2 stops20h 30m

Belfast Intl

Mon 10/5

8:15 pm-3:10 pm

3 stops47h 55m

$827

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Mon 9/21

8:30 pm-8:40 pm

2 stops19h 10m

Belfast Intl

Tue 10/6

10:30 am-7:25 pm

2 stops13h 55m

$870

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Mon 11/16

7:40 pm-7:10 pm

2 stops18h 30m

Belfast Intl

Tue 11/24

5:15 pm-6:40 pm

3 stops30h 25m

$874

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sat 9/12

8:30 pm-10:40 pm

2 stops21h 10m

Belfast Intl

Wed 9/23

7:35 am-7:25 pm

2 stops16h 50m

$877

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 56 resultsSorted by cheapest first
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2
3
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6

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 August 2, 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
8,135 reviews

Overall

6.7

Crew

7.7

Food

6.4

Boarding

7.0

Entertainment

6.5

Comfort

6.8

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
8,135 reviews
British Airways
6.7
Okay
8,135 reviews

Overall

6.7

Crew

7.7

Food

6.4

Boarding

7.0

Entertainment

6.5

Comfort

6.8

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 and Delta fly from Washington, D.C. to Belfast in about 9h 55m. The time it takes to get you to your destination can typically vary by up to 4h 24m. 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 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.

See more FAQs

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