IAD - BHD

$635 Find Cheap Flights from Washington Dulles Airport to Belfast City Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Belfast City departing on 3/16. 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

KAYAK searches 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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

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

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

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

Everything you should know

Cheapest round-trip
$635
British Airways
Mon 3/16Sun 3/22
IAD - BHD • 1 stop
Cheapest one-way
Multiple Airlines
Thu 10/2
IAD - BHD • multi-stop
Top airlines
British Airways
Cheapest • from $635 (round-trip)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Belfast City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Belfast City (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 City 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 Belfast City

Mon, Mar 16 - Sun, Mar 22
British Airways Logo
10:45 pm - 2:15 pmIAD-BHD
11h 30m1 stop
British Airways Logo
9:10 am - 4:35 pmBHD-IAD
11h 25m1 stop
$635British Airways
Find Deal
Mon, Mar 16 - Sun, Mar 22
British Airways Logo
10:45 pm - 2:15 pmIAD-BHD
11h 30m1 stop
British Airways Logo
6:30 am - 4:35 pmBHD-IAD
14h 05m1 stop
$645British Airways
Find Deal
Sun, Oct 19 - Sat, Nov 1
Virgin Atlantic Logo
5:25 pm - 9:15 pmIAD-BHD
22h 50m1 stop
Virgin Atlantic Logo
5:20 pm - 5:05 pmBHD-IAD
27h 45m1 stop
$655Virgin Atlantic
Find Deal
Wed, Nov 12 - Sun, Nov 16
Delta Logo
6:05 pm - 9:00 pmIAD-BHD
21h 55m1 stop
Delta Logo
6:30 am - 4:05 pmBHD-IAD
14h 35m1 stop
$656Delta
Find Deal
Sun, Oct 19 - Sun, Oct 26
KLM Logo
5:25 pm - 9:15 pmIAD-BHD
22h 50m1 stop
KLM Logo
6:30 am - 5:05 pmBHD-IAD
14h 35m1 stop
$657KLM
Find Deal
Wed, Nov 12 - Sun, Nov 16
Delta Logo
11:05 am - 9:00 pmIAD-BHD
28h 55m2 stops
Delta Logo
6:30 am - 4:05 pmBHD-IAD
14h 35m1 stop
$660Delta
Find Deal
Mon, Mar 16 - Sun, Mar 22
KLM Logo
7:50 pm - 4:50 pmIAD-BHD
17h 00m2 stops
KLM Logo
6:30 am - 5:05 pmBHD-IAD
14h 35m1 stop
$670KLM
Find Deal
Mon, Nov 3 - Fri, Nov 7
Multiple Airlines Logo
7:40 pm - 8:30 pmIAD-BHD
19h 50m2 stops
Multiple Airlines Logo
7:20 am - 6:30 pmBHD-IAD
16h 10m2 stops
$751Multiple Airlines
Find Deal
Sun, Oct 19 - Sat, Nov 1
Multiple Airlines Logo
5:45 pm - 7:55 pmIAD-BHD
21h 10m3 stops
Multiple Airlines Logo
6:00 pm - 10:00 pmBHD-IAD
32h 00m3 stops
$753Multiple Airlines
Find Deal
Thu, Mar 5 - Thu, Mar 12
Virgin Atlantic Logo
12:30 pm - 4:50 pmIAD-BHD
23h 20m2 stops
Virgin Atlantic Logo
6:30 am - 12:07 amBHD-IAD
21h 37m2 stops
$818Virgin Atlantic
Find Deal
Booking Insights

KAYAK's insights & trends for Dulles Intl to Belfast City flights

Get data-powered insights and trends into flights from Dulles Intl to Belfast City 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 round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington Dulles Airport to Belfast City Airport were found on British Airways ($635) and Virgin Atlantic ($655).

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

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 Belfast City Airport.

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

Good to know

Cheapest flight$635
Most popular time to fly with an average 34% increase in price.
Flight from Washington Dulles Airport to Belfast City Airport

When to book flights from Dulles Intl to Belfast City

Are your dates flexible? Find out the best times to travel from Dulles Intl to Belfast City 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 $635 for a round-trip ticket.

  • 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?

    oneworld is the only airline alliance operating flights between Washington Dulles Airport and Belfast City Airport.

  • 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.

Reviews of the top airline flying from Dulles Intl to Belfast City

 
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 City? 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 7416 reviews
6.4Entertainment
6.3Food
6.9Boarding
6.7Comfort
7.6Crew
Airline reviews

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

6.0 GoodKeith, Sep 2025DEN - LHR
Read more British Airways reviews

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Connection at Hethrow was horrible..We couldn't get out of the plane for an hour as they were buying people to the airport and there were not enough busses. We had 2 and half hf between flights so it was very tight. After departing plane we had to go thru security again. People with less time in between connections missed their flights

Horrible… I was downgraded without notice, had to sit in economy and given my back injury was in pain most of the journey. I expect to be reimbursed for this inconvenience and after my return flight home, I never plan to fly with British Airways again.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Everything you need to know for your flight from Dulles Intl to Belfast City

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.