HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast

$342+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Belfast with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 8, 2026.

This Mytrip deal was found by Cheapflights users on 5/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:30 pm
IAD
-
BFS
2 stops13h 45m
Multiple Airlines
Mon 9/148:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 5/3$860
This Mytrip deal was found by Cheapflights users on 5/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:05 pm
IAD
-
BFS
2 stops17h 10m
Multiple Airlines
Tue 10/67:00 am
BFS
-
IAD
3 stops41h 00m
Multiple Airlines
Deal found 5/3$910
This Cheapflightsfares deal was found by Cheapflights users on 5/3. 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 9/295:45 pm
IAD
-
BHD
1 stop10h 15m
British Airways
Tue 10/69:40 am
BHD
-
IAD
1 stop12h 45m
British Airways
Deal found 5/3$957
This Mytrip deal was found by Cheapflights users on 5/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:05 pm
IAD
-
BHD
2 stops18h 10m
Multiple Airlines
Tue 10/67:00 am
BHD
-
IAD
3 stops41h 00m
Multiple Airlines
Deal found 5/3$963
This oojo deal was found by Cheapflights users on 5/3. 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.
Sun 10/119:35 pm
BWI
-
BHD
1 stop12h 00m
British Airways
Wed 10/148:35 pm
BHD
-
BWI
1 stop28h 05m
British Airways
Deal found 5/3$974
This British Airways deal was found by Cheapflights users on 5/7. 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 9/710:25 pm
IAD
-
BHD
1 stop12h 05m
British Airways
Fri 9/119:35 am
BHD
-
IAD
1 stop12h 50m
British Airways
Deal found 5/7$979
This British Airways deal was found by Cheapflights users on 5/7. 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 9/279:35 pm
BWI
-
BHD
1 stop12h 00m
British Airways
Thu 10/14:35 pm
BHD
-
BWI
1 stop32h 05m
British Airways
Deal found 5/7$979
This American Airlines deal was found by Cheapflights users on 5/3. 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 10/113:54 pm
BWI
-
BHD
2 stops17h 41m
American Airlines
Wed 10/1410:05 am
BHD
-
BWI
2 stops18h 56m
American Airlines
Deal found 5/3$992
This British Airways deal was found by Cheapflights users on 5/3. 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.
Tue 9/293:36 pm
DCA
-
BHD
2 stops14h 09m
British Airways
Tue 10/69:40 am
BHD
-
DCA
2 stops16h 19m
British Airways
Deal found 5/3$994
This Mytrip deal was found by Cheapflights users on 5/5. 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.
Fri 6/58:18 am
IAD
-
BFS
3 stops32h 32m
Multiple Airlines
Thu 6/116:40 am
BFS
-
IAD
2 stops18h 49m
Multiple Airlines
Deal found 5/5$1,001
This Mytrip deal was found by Cheapflights users on 5/6. 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.
Fri 6/56:55 pm
DCA
-
BFS
2 stops16h 35m
Multiple Airlines
Thu 6/116:10 am
BFS
-
DCA
3 stops31h 43m
Multiple Airlines
Deal found 5/6$1,030
This oojo deal was found by Cheapflights users on 5/3. 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.
Tue 9/297:25 pm
BWI
-
BHD
1 stop10h 20m
British Airways
Tue 10/67:30 pm
BHD
-
BWI
1 stop29h 10m
British Airways
Deal found 5/3$1,036

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 May 8, 2026.

Round-trip from

$860
(Mytrip)

One-way from

$342
(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 May 8, 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

8:30 pm-3:15 pm

2 stops13h 45m

Belfast Intl

Mon 9/14

8:15 pm-3:10 pm

3 stops47h 55m

$860

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 9/29

5:05 pm-3:15 pm

2 stops17h 10m

Belfast Intl

Tue 10/6

7:00 am-7:00 pm

3 stops41h 00m

$910

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 9/7

10:25 pm-5:30 pm

1 stop14h 05m

Belfast City

Fri 9/11

6:30 am-5:25 pm

1 stop15h 55m

$979

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 9/27

7:15 pm-10:30 am

1 stop10h 15m

Belfast City

Wed 9/30

7:40 pm-3:55 pm

1 stop25h 15m

$979

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 9/6

9:35 pm-2:35 pm

1 stop12h 00m

Belfast City

Wed 9/9

7:40 pm-7:40 pm

1 stop29h 00m

$979

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 9/27

9:35 pm-2:35 pm

1 stop12h 00m

Belfast City

Thu 10/1

4:35 pm-7:40 pm

1 stop32h 05m

$979

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 10/11

3:54 pm-2:35 pm

2 stops17h 41m

Belfast City

Wed 10/14

10:05 am-12:01 am

2 stops18h 56m

$992

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 9/29

3:36 pm-10:45 am

2 stops14h 09m

Belfast City

Tue 10/6

9:40 am-8:59 pm

2 stops16h 19m

$994

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Fri 6/5

6:55 pm-4:30 pm

2 stops16h 35m

Belfast Intl

Thu 6/11

6:10 am-8:53 am

3 stops31h 43m

$1,030

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 9/29

7:25 pm-10:45 am

1 stop10h 20m

Belfast City

Tue 10/6

7:30 pm-7:40 pm

1 stop29h 10m

$1,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 May 8, 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
7,952 reviews

Comfort

6.8

Crew

7.7

Entertainment

6.4

Food

6.4

Overall

6.7

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
7,952 reviews
British Airways
6.7
Okay
7,952 reviews

Comfort

6.8

Crew

7.7

Entertainment

6.4

Food

6.4

Overall

6.7

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 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 . The distance between Washington, D.C. and Belfast is about 3390 mi.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$652Average$931FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights