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$370 Find cheap flights from Washington Dulles Airport to Belfast City Airport

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 9/7. 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
Fri 7/12
Fri 7/19

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 43,795,805 times on KAYAK, and here is why:

Save 21% 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
11:00 pm - 4:40 pmIAD-BHD
13h 40m1 stop
9:00 am - 3:45 pmBHD-IAD
11h 45m1 stop
$544British Airways
Find Deal
Tue, Oct 29 - Thu, Nov 7
10:45 pm - 3:20 pmIAD-BHD
11h 35m1 stop
10:10 am - 8:30 pmBHD-IAD
15h 20m1 stop
$564British Airways
Find Deal
Tue, Sep 17 - Fri, Sep 27
10:45 pm - 3:35 pmIAD-BHD
11h 50m1 stop
12:45 pm - 3:35 pmBHD-IAD
31h 50m1 stop
$565American Airlines
Find Deal
Wed, Sep 4 - Thu, Sep 12
10:45 pm - 3:35 pmIAD-BHD
11h 50m1 stop
9:35 am - 11:10 pmBHD-IAD
18h 35m2 stops
$575American Airlines
Find Deal
Wed, Sep 4 - Thu, Sep 12
6:52 am - 3:35 pmIAD-BHD
27h 43m2 stops
6:35 am - 8:30 pmBHD-IAD
18h 55m1 stop
$614Iberia
Find Deal
Wed, Aug 21 - Mon, Sep 2
5:03 pm - 4:50 pmIAD-BHD
18h 47m2 stops
5:20 pm - 11:04 pmBHD-IAD
34h 44m2 stops
$651Delta
Find Deal
Wed, Sep 4 - Thu, Sep 12
5:25 pm - 4:50 pmIAD-BHD
18h 25m1 stop
5:20 pm - 3:35 pmBHD-IAD
27h 15m1 stop
$672Delta
Find Deal
Sun, Aug 11 - Sun, Aug 18
6:50 pm - 8:05 pmIAD-BHD
20h 15m2 stops
7:15 am - 5:40 pmBHD-IAD
39h 25m3 stops
Tue, Sep 17 - Sat, Sep 21
10:45 pm - 3:20 pmIAD-BHD
11h 35m1 stop
6:55 pm - 3:35 pmBHD-IAD
25h 40m1 stop
Tue, Sep 17 - Sat, Sep 21
5:55 pm - 10:35 amIAD-BHD
11h 40m1 stop
6:35 am - 3:40 pmBHD-IAD
14h 05m1 stop
$3,182Iberia
Find Deal
Tue, Jun 25 - Tue, Jul 9

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 $544 on British Airways, followed by American Airlines ($565). One-way flight deals have also been found from as low as $429 on Delta and from $570 on American Airlines.

Good to know

Cheapest flight

$370
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 $370 for a one-way ticket and $544 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?

    SkyTeam, oneworld, and Star Alliance 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 6741 reviews
6.8Comfort
7.7Crew
7.0Boarding
6.4Food
6.5Entertainment
Airline reviews

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

10.0 ExcellentAnonymous, Jun 2024PIT - LHR
Read more about British Airways reviews

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

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.
9/7Sat
2 stops
28h 50mIAD-BHD
$370
7/5Fri
1 stopDelta
18h 25mIAD-BHD
$429
7/5Fri
2 stopsDelta
22h 42mIAD-BHD
$434
9/7Sat
3 stops
16h 25mIAD-BHD
$540
7/2Tue
2 stopsAmerican Airlines
16h 22mIAD-BHD
$570
7/2Tue
1 stop
10h 10mIAD-BHD
$665
7/2Tue
1 stop
10h 10mIAD-BHD
$666
7/5Fri
3 stops
33h 00mIAD-BHD
$715
10/31Thu
2 stops
58h 15mIAD-BHD
$839
7/5Fri
3 stops
35h 40mIAD-BHD
$853

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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.
6/12Wed
multi-stopBritish Airways
9h 55mIAD-BHD
6/19Wed
multi-stopBritish Airways
15h 40mBHD-IAD
$1,185
6/12Wed
multi-stopBritish Airways
14h 20mIAD-BHD
6/19Wed
multi-stopBritish Airways
15h 40mBHD-IAD
$1,218
6/12Wed
multi-stopBritish Airways
17h 37mIAD-BHD
6/19Wed
multi-stopBritish Airways
19h 09mBHD-IAD
$1,228

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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: