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$262+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This Trip.com deal was found by Cheapflights users on 2/1. 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.
Wed 3/47:40 pm
IAD
-
BFS
2 stops17h 15m
Multiple Airlines
Thu 3/126:30 am
BFS
-
IAD
2 stops17h 00m
Multiple Airlines
Deal found 2/1$547
This Trip.com deal was found by Cheapflights users on 2/1. 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.
Wed 3/47:40 pm
IAD
-
BHD
2 stops18h 20m
Multiple Airlines
Thu 3/127:25 am
BHD
-
IAD
2 stops16h 05m
Multiple Airlines
Deal found 2/1$561
This Expedia deal was found by Cheapflights users on 2/1. 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.
Wed 3/46:20 pm
IAD
-
BHD
1 stop9h 50m
British Airways
Thu 3/126:35 am
BHD
-
IAD
1 stop14h 00m
British Airways
Deal found 2/1$647
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Sun 2/228:35 pm
BWI
-
BHD
1 stop12h 20m
American Airlines
Mon 3/92:40 pm
BHD
-
BWI
1 stop33h 05m
American Airlines
Deal found 2/3$647
This British Airways deal was found by Cheapflights users on 2/3. 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.
Wed 3/46:20 pm
IAD
-
BHD
1 stop9h 50m
British Airways
Sun 3/86:30 am
BHD
-
IAD
1 stop14h 05m
British Airways
Deal found 2/3$651
This Expedia deal was found by Cheapflights users on 2/1. 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.
Wed 3/42:16 pm
DCA
-
BHD
2 stops14h 59m
British Airways
Thu 3/129:05 am
BHD
-
DCA
2 stops15h 38m
British Airways
Deal found 2/1$652
This Ticket deal was found by Cheapflights users on 2/3. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:05 pm
IAD
-
BHD
1 stop17h 45m
KLM
Mon 3/96:30 am
BHD
-
IAD
1 stop14h 35m
KLM
Deal found 2/3$654
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/59:45 pm
IAD
-
BHD
1 stop17h 45m
British Airways
Thu 3/129:05 am
BHD
-
IAD
1 stop15h 50m
British Airways
Deal found 2/2$656
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 8/255:40 pm
IAD
-
BHD
1 stop10h 20m
British Airways
Tue 9/19:40 am
BHD
-
IAD
1 stop15h 00m
British Airways
Deal found 2/3$660
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:30 pm
IAD
-
BHD
1 stop12h 50m
British Airways
Wed 9/26:30 am
BHD
-
IAD
1 stop14h 20m
British Airways
Deal found 2/2$662
This KLM deal was found by Cheapflights users on 2/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/43:39 pm
BWI
-
BHD
2 stops20h 11m
KLM
Thu 3/126:30 am
BHD
-
BWI
2 stops16h 49m
KLM
Deal found 2/1$674
This oojo deal was found by Cheapflights users on 2/3. 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.
Thu 4/27:15 pm
IAD
-
BHD
1 stop19h 10m
British Airways
Tue 4/78:25 pm
BHD
-
IAD
1 stop26h 00m
British Airways
Deal found 2/3$675

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 February 4, 2026.

Round-trip from

$547
(Trip.com)

One-way from

$262
(oojo)
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 February 4, 2026.
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

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-5:55 pm

2 stops17h 15m

Belfast Intl

Thu 3/12

6:30 am-7:30 pm

2 stops17h 00m

$547

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-7:00 pm

2 stops18h 20m

Belfast City

Thu 3/12

7:25 am-7:30 pm

2 stops16h 05m

$561

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 2/22

8:35 pm-1:55 pm

1 stop12h 20m

Belfast City

Mon 3/9

2:40 pm-7:45 pm

1 stop33h 05m

$647

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

6:20 pm-9:10 am

1 stop9h 50m

Belfast City

Sun 3/8

6:30 am-3:35 pm

1 stop14h 05m

$651

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 3/4

2:16 pm-10:15 am

2 stops14h 59m

Belfast City

Thu 3/12

9:05 am-8:43 pm

2 stops15h 38m

$652

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 2/22

6:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Mon 3/9

6:30 am-5:05 pm

1 stop14h 35m

$654

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/5

9:45 pm-8:30 pm

1 stop17h 45m

Belfast City

Thu 3/12

6:35 am-4:35 pm

1 stop14h 00m

$654

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 4/29

10:25 pm-1:35 pm

1 stop10h 10m

Belfast City

Fri 5/8

11:00 am-5:25 pm

1 stop11h 25m

$662

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 5/2

5:40 pm-12:25 pm

1 stop13h 45m

Belfast City

Sat 5/9

7:05 am-5:25 pm

1 stop15h 20m

$662

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 3/4

3:39 pm-4:50 pm

2 stops20h 11m

Belfast City

Thu 3/12

6:30 am-7:19 pm

2 stops16h 49m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 39 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
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 February 4, 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
7,715 reviews

Comfort

6.8

Boarding

6.9

Food

6.4

Entertainment

6.4

Overall

6.7

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,715 reviews
British Airways
6.7
Okay
7,715 reviews

Comfort

6.8

Boarding

6.9

Food

6.4

Entertainment

6.4

Overall

6.7

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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 American Airlines, British Airways, and KLM fly from Washington, D.C. to Belfast in about 9h 50m. The time it takes to get you to your destination can typically vary by up to 7h 55m. 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 $627.

  • 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
Dulles Intl to Belfast City flights
Reagan-National to Belfast Intl flights
Reagan-National 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$627Average$875FlexibilityNo cancel feeOn-time70%

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