$278 Find Cheap Flights from Washington Dulles Airport to Northern Ireland

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 Northern Ireland departing on 1/28. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Northern Ireland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Northern Ireland, 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 Northern Ireland, as well as popular online travel agencies
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Book Cheap Dulles Intl to Northern Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Northern Ireland 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Northern Ireland

Thu, Mar 5 - Thu, Mar 12
British Airways Logo
6:20 pm - 10:20 am
IAD
-
BHD
11h 00m1 stop
British Airways Logo
6:35 am - 8:55 pm
BHD
-
IAD
18h 20m1 stop
$622British Airways
Mon, Mar 16 - Sun, Mar 22
British Airways Logo
10:45 pm - 4:05 pm
IAD
-
BHD
13h 20m1 stop
British Airways Logo
5:35 pm - 4:35 pm
BHD
-
IAD
27h 00m1 stop
$642British Airways
Mon, Mar 16 - Sun, Mar 22
British Airways Logo
10:45 pm - 4:05 pm
IAD
-
BHD
13h 20m1 stop
British Airways Logo
8:25 pm - 8:55 pm
BHD
-
IAD
28h 30m1 stop
$643British Airways
Wed, Feb 11 - Sun, Feb 15
British Airways Logo
9:45 pm - 4:35 pm
IAD
-
BHD
13h 50m1 stop
British Airways Logo
6:30 am - 7:55 pm
BHD
-
IAD
18h 25m1 stop
$644British Airways
Thu, Mar 5 - Thu, Mar 12
Delta Logo
12:23 pm - 4:50 pm
IAD
-
BHD
23h 27m2 stops
Delta Logo
6:30 am - 5:05 pm
BHD
-
IAD
14h 35m1 stop
$671Delta
Thu, Jan 15 - Tue, Jan 20
KLM Logo
6:05 pm - 4:50 pm
IAD
-
BHD
17h 45m1 stop
KLM Logo
5:20 pm - 7:09 pm
BHD
-
IAD
30h 49m2 stops
$676KLM
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
7:40 pm - 8:15 pm
IAD
-
BFS
19h 35m2 stops
Multiple Airlines Logo
8:20 am - 6:30 pm
BFS
-
IAD
15h 10m2 stops
$677Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Delta Logo
12:23 pm - 4:50 pm
IAD
-
BHD
23h 27m2 stops
Delta Logo
6:30 am - 11:35 pm
BHD
-
IAD
21h 05m2 stops
$681Delta
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
7:40 pm - 10:20 pm
IAD
-
BFS
21h 40m2 stops
Multiple Airlines Logo
6:30 am - 6:30 pm
BFS
-
IAD
17h 00m2 stops
$681Multiple Airlines
Thu, Jan 15 - Tue, Jan 20
Aer Lingus Logo
5:05 pm - 8:50 pm
IAD
-
BHD
22h 45m2 stops
Aer Lingus Logo
7:00 am - 3:35 pm
BHD
-
IAD
13h 35m2 stops
$766Aer Lingus
Booking Insights

KAYAK's insights & trends for Dulles Intl to Northern Ireland flights

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

Which airlines fly non-stop between Washington, D.C. Dulles Intl Airport and Northern Ireland?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Northern Ireland.

There is just one airline that flies from Washington, D.C. Dulles Intl Airport to Northern Ireland direct and that is British Airways. The best round-trip deal found from British Airways for the route is to Belfast City Airport (BHD) and costs $620.

Find deals

Good to know

Cheapest flight$278
Flight from Washington Dulles Airport to Belfast Intl Airport

FAQs - booking Northern Ireland flights

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

    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 Northern Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Northern Ireland 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 Northern Ireland?

    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 from Washington Dulles Airport to Northern Ireland with an airline and back with another airline.

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

    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 from Washington Dulles Airport to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the evening, when round-trip flights cost $767 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally at night, which is peak travel time and where the average cost of a ticket is $800.

Reviews of the top airline flying from Dulles Intl to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Northern Ireland. 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 Northern Ireland? 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.
6.7
British AirwaysOverall score based on 7583 reviews
6.7Comfort
6.4Entertainment
6.4Food
6.9Boarding
7.6Crew
Airline reviews

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

8.0 ExcellentAnonymous, Dec 2025
SFO - LHR
Read more British Airways reviews

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Everything you need to know for your flight from Dulles Intl to Northern Ireland

Information on your arrival and departure airports

Washington Dulles Airport (IAD)