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Find cheap flights from Washington Dulles Airport to Belfast City Airport from $396

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Belfast departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 6/2
Sun 6/9

Search hundreds of travel sites at once for deals on flights to Belfast City Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Belfast, as well as popular online travel agencies
In the last 7 days travelers have searched 43,740,974 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Dulles Intl to Belfast (IAD-BHD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:55 pm - 10:35 amIAD-BHD
11h 40m1 stop
6:35 am - 3:35 pmBHD-IAD
14h 00m1 stop
$611British Airways
Find Deal
Tue, Sep 24 - Mon, Sep 30
8:15 pm - 3:20 pmIAD-BHD
14h 05m2 stops
9:50 am - 3:35 pmBHD-IAD
10h 45m1 stop
$614American Airlines
Find Deal
Tue, Sep 24 - Mon, Sep 30
10:45 pm - 3:20 pmIAD-BHD
11h 35m1 stop
9:50 am - 3:35 pmBHD-IAD
10h 45m1 stop
$626American Airlines
Find Deal
Tue, Aug 27 - Wed, Sep 11
8:45 pm - 6:55 pmIAD-BHD
17h 10m2 stops
6:35 am - 7:44 pmBHD-IAD
18h 09m2 stops
$660British Airways
Find Deal
Tue, Sep 24 - Mon, Sep 30
5:25 pm - 4:50 pmIAD-BHD
18h 25m1 stop
5:20 pm - 6:53 pmBHD-IAD
30h 33m2 stops
$708KLM
Find Deal
Sun, Aug 11 - Sun, Aug 18
7:50 pm - 4:50 pmIAD-BHD
16h 00m2 stops
5:20 pm - 6:53 pmBHD-IAD
30h 33m2 stops
$712KLM
Find Deal
Sun, Aug 11 - Sun, Aug 18
6:30 pm - 2:50 pmIAD-BHD
15h 20m2 stops
3:35 pm - 3:30 pmBHD-IAD
28h 55m2 stops
$940Lufthansa
Find Deal
Thu, Sep 26 - Tue, Oct 1
4:59 pm - 4:50 pmIAD-BHD
18h 51m2 stops
5:20 pm - 5:28 pmBHD-IAD
29h 08m2 stops
$942Delta
Find Deal
Wed, May 15 - Sat, May 18
6:00 pm - 2:50 pmIAD-BHD
15h 50m1 stop
3:35 pm - 3:20 pmBHD-IAD
28h 45m2 stops
$1,163Lufthansa
Find Deal
Wed, Jul 10 - Mon, Jul 29
1:08 pm - 4:50 pmIAD-BHD
22h 42m2 stops
5:20 pm - 4:00 pmBHD-IAD
27h 40m1 stop
$1,242Delta
Find Deal
Wed, Jun 19 - Mon, Jun 24

Flights from Dulles Intl to Belfast - Travel Insights & Trends

Get data-powered insights and trends into flights from Dulles Intl to Belfast to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington Dulles Airport to Belfast City Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Washington Dulles Airport to Belfast City Airport found by KAYAK users in the last 72 hours was for $611 on British Airways, followed by American Airlines ($614). One-way flight deals have also been found from as low as $449 on Lufthansa and from $737 on KLM.

Good to know

Cheapest flight

$396
Flight from Washington Dulles Airport to Belfast City Airport

When to book flights from Dulles Intl to Belfast

Are your dates flexible? Find out the best times to travel from Dulles Intl to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Belfast City Airport flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport was $396 for a one-way ticket and $611 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Belfast City Airport?

    Yes, you’ll need a passport to travel to Belfast City Airport from Washington Dulles Airport.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Belfast City Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Belfast City Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Washington Dulles Airport and Belfast City Airport, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Belfast City Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Belfast City Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Belfast City Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast City Airport from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Belfast City Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Belfast City Airport with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BHD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Belfast City Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast City Airport from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Dulles Intl to Belfast

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Belfast? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
British AirwaysOverall score based on 6875 reviews
7.7Crew
6.5Entertainment
6.8Comfort
6.4Food
7.0Boarding
Airline reviews

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

8.0 ExcellentRichard, Apr 2024ATL - LHR
Read more about British Airways reviews

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

This was an American Airlines flight. The crew were very unhappy and quite grumpy. Abrupt to the point of being rude. The food was dreadful. Indeed the breakfast was in edible. I will avoid AA at all costs in the future.

Book cheap flights from Washington, D.C. to Belfast

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Belfast found on KAYAK in the last 72 hours.
6/25Tue
2 stops
39h 35mIAD-BHD
$396
6/24Mon
3 stops
36h 20mIAD-BHD
$437
5/12Sun
2 stopsLufthansa
35h 49mIAD-BHD
$449
6/22Sat
3 stops
44h 00mIAD-BHD
$452
6/26Wed
2 stops
31h 40mIAD-BHD
$478
5/12Sun
1 stopLufthansa
16h 35mIAD-BHD
$533
6/28Fri
3 stops
33h 30mIAD-BHD
$552
6/23Sun
1 stopKLM
18h 25mIAD-BHD
$737
6/23Sun
2 stopsDelta
23h 45mIAD-BHD
$741
6/22Sat
1 stopAir France
18h 25mIAD-BHD
$787

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Last minute flights from Dulles Intl to Belfast

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Belfast that are departing in the next 10 days.
5/8Wed
multi-stopAmerican Airlines
9h 55mIAD-BHD
5/11Sat
multi-stopAmerican Airlines
18h 40mBHD-IAD
$825
5/8Wed
multi-stopAmerican Airlines
9h 55mIAD-BHD
5/11Sat
multi-stopAmerican Airlines
17h 52mBHD-IAD
$833
5/8Wed
multi-stopBritish Airways
16h 28mIAD-BHD
5/11Sat
multi-stopBritish Airways
17h 52mBHD-IAD
$864
5/8Wed
multi-stop
17h 30mIAD-BHD
5/11Sat
multi-stop
40h 05mBHD-IAD
$1,162

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Washington Dulles Airport - Belfast City Airport Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Belfast City Airport (BHD)United Kingdom

Return flight deals:

Belfast City Airport - Washington Dulles Airport

Cabin classes: