IAD

£265 Find Cheap Flights from Belfast to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to Dulles Intl departing on 9/9. 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 Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Washington, D.C., 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 Belfast to Washington, D.C., as well as popular online travel agencies
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Cheap Flights from Belfast to Washington, D.C.

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast to Washington, D.C. 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 return flight deals from Belfast to Dulles Intl

Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
06:35 - 15:35BHD-IAD
14h 00m1 stop
American Airlines Logo
21:45 - 14:15IAD-BHD
11h 30m1 stop
£587American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
10:40 - 19:55BHD-IAD
14h 15m1 stop
American Airlines Logo
21:45 - 14:15IAD-BHD
11h 30m1 stop
£588American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
06:35 - 19:55BHD-IAD
18h 20m1 stop
American Airlines Logo
18:20 - 10:40IAD-BHD
11h 20m1 stop
£590American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
06:35 - 19:21BHD-IAD
17h 46m2 stops
American Airlines Logo
16:34 - 16:05IAD-BHD
18h 31m2 stops
£595American Airlines
Find Deal
Thu, 11 Sep - Thu, 18 Sep
 Logo
07:00 - 18:55BFS-IAD
16h 55m2 stops
 Logo
17:20 - 20:10IAD-BFS
21h 50m2 stops
Fri, 12 Sep - Fri, 19 Sep
 Logo
21:20 - 15:50BFS-IAD
23h 30m2 stops
 Logo
17:20 - 11:50IAD-BFS
13h 30m2 stops
Thu, 11 Sep - Thu, 18 Sep
 Logo
16:00 - 19:59BFS-IAD
32h 59m3 stops
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22:05 - 21:40IAD-BFS
18h 35m2 stops
Thu, 11 Sep - Thu, 18 Sep
 Logo
06:00 - 15:20BFS-IAD
38h 20m3 stops
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12:41 - 11:05IAD-BFS
17h 24m3 stops
Thu, 14 Aug - Sun, 24 Aug
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08:10 - 19:20BFS-IAD
40h 10m3 stops
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08:28 - 15:55IAD-BFS
26h 27m2 stops
Thu, 14 Aug - Sun, 24 Aug
 Logo
08:10 - 19:20BFS-IAD
40h 10m3 stops
 Logo
22:20 - 23:20IAD-BFS
20h 00m3 stops
Useful Info

Good to know - Cheap tickets from Belfast to Washington, D.C.

Cheapest flight£265
Flight from Belfast City Airport to Washington Dulles Airport

When to book flights from Belfast to Dulles Intl

Are your dates flexible? Find out the best times to travel from Belfast to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Belfast to Washington, D.C. flights

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

    In the last 3 days, the lowest price for a flight from Belfast to Washington, D.C. Dulles Intl Airport was £353 for a one-way ticket and £782 for a return.

  • Which airports will I be using when flying from Belfast to Washington, D.C.?

    There are 2 airports in Belfast (Belfast Intl and Belfast City.) and only 1 airport in Washington, D.C. (Washington, D.C. Dulles Intl). The cheapest flights are generally found on the Belfast City Airport to Washington, D.C. Dulles Intl flight route.

  • Which aircraft models fly most regularly from Belfast to Washington, D.C.?

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

  • Which airline alliances offer flights from Belfast to Washington, D.C.?

    oneworld, and SkyTeam are the airline alliances operating flights between Belfast and Washington, D.C., with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Belfast to Washington, D.C.?

    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 Belfast to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast to Washington, D.C.?

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

  • What is the Hacker Fare option on flights from Belfast to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Belfast with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast to Washington, D.C.?

    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 Washington, D.C. from Belfast 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 Belfast to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Washington, D.C.. 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 Belfast to Dulles Intl? 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.
6.6
British AirwaysOverall score based on 7217 reviews
6.3Food
6.9Boarding
6.7Comfort
7.6Crew
6.4Entertainment
Airline reviews

Excellent everywhere but Philly, the most rotten airport in the world.

10.0 ExcellentAnonymous, Jul 2025LHR - PHL
Read more British Airways reviews

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

We never made it onto this flight due to BA's lackluster organisation.

The air hostess were good, cheerful, but I didn't like the boarding. My son and I initially bought our flight tickets, making sure it included 1 luggage and a carry on. Tickets were purchased for British airlines, but we were merged with American Airlines. At checking in our languages, we were told, we don't have luggage prepaid so we had to pay extra $125 each and almost £60 on our way back. I think that's unfair.

Economy seats are so small and compacted so close together that comfort is negatively affected, especially on long flights. However that is due to aircraft design, not anything the airline can do about it.

3/4 bags delayed and 1/4 damaged at the other end. Flight was freezing

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

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