$505 Find Cheap Flights from Washington, D.C. to Belfast

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Belfast departing on 5/22. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

 
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
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Cheap Flight Deals from Washington, D.C. to Belfast (WAS-BHD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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.

Recent round-trip flight deals from Washington, D.C. to Belfast

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Belfast.
Discover the best prices for you by selecting your travel dates on KAYAK.
British Airways Logo
8:21 pm - 5:15 pmBWI-BHD
15h 54m2 stops
British Airways Logo
11:15 am - 12:31 amBHD-BWI
18h 16m2 stops
$602British Airways
Find Deal
Sat, Sep 6 - Sat, Dec 20
British Airways Logo
5:00 pm - 12:15 pmDCA-BHD
14h 15m2 stops
British Airways Logo
9:10 am - 10:40 pmBHD-DCA
18h 30m2 stops
$602British Airways
Find Deal
Sat, Sep 6 - Sat, Dec 20
American Airlines Logo
7:25 pm - 1:05 pmIAD-BHD
12h 40m1 stop
American Airlines Logo
11:00 am - 5:30 pmBHD-IAD
11h 30m1 stop
$619American Airlines
Find Deal
Sun, Jul 6 - Sun, Aug 24
American Airlines Logo
7:25 pm - 12:15 pmIAD-BHD
11h 50m1 stop
American Airlines Logo
9:10 am - 3:35 pmBHD-IAD
11h 25m1 stop
$666American Airlines
Find Deal
Sat, Sep 6 - Sat, Dec 20
 Logo
8:22 am - 4:40 pmIAD-BFS
27h 18m2 stops
 Logo
5:55 am - 9:04 pmBFS-IAD
20h 09m3 stops
Tue, Jun 10 - Tue, Jun 17
KLM Logo
8:30 pm - 4:55 pmIAD-BHD
15h 25m2 stops
KLM Logo
6:30 am - 3:35 pmBHD-IAD
14h 05m1 stop
$750KLM
Find Deal
Sun, Jul 6 - Sun, Aug 24
Delta Logo
12:13 pm - 9:15 pmIAD-BHD
28h 02m2 stops
Delta Logo
5:25 pm - 7:37 pmBHD-IAD
31h 12m2 stops
$760Delta
Find Deal
Sun, Jul 6 - Sun, Aug 24
Delta Logo
8:30 pm - 4:55 pmIAD-BHD
39h 25m2 stops
Delta Logo
5:25 pm - 3:35 pmBHD-IAD
27h 10m1 stop
$761Delta
Find Deal
Sat, Jul 5 - Sun, Aug 24
 Logo
9:40 am - 4:40 pmDCA-BFS
26h 00m3 stops
 Logo
8:20 am - 9:53 pmBFS-DCA
18h 33m3 stops
Tue, Jun 10 - Tue, Jun 17
KLM Logo
5:25 pm - 4:55 pmIAD-BHD
18h 30m1 stop
KLM Logo
8:30 am - 3:35 pmBHD-IAD
12h 05m1 stop
$1,212KLM
Find Deal
Thu, Jun 19 - Tue, Jun 24
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KAYAK's insights & trends for Washington, D.C. to Belfast flights

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

What is the cheapest month to fly from Washington, D.C. to Belfast?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Belfast, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Belfast is January, where tickets cost $611 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,116 and $1,016 respectively.

Good to know

Cheapest flight$505
Flight from Washington Dulles Airport to Belfast Intl Airport

When to book flights from Washington, D.C. to Belfast

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Belfast

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Belfast was $505 for a one-way ticket and $602 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Belfast?

    Yes, you’ll need a passport to travel to Belfast from Washington, D.C..

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

    Washington, D.C. is served by 2 major airports and there are 2 airports in Belfast. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving in Belfast at one of these airports: Belfast Intl or Belfast City.

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

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

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

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

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

    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, D.C. to Belfast.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Washington, D.C. 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, D.C. to Belfast?

    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 with an airline and back to Washington, D.C. with another airline.

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

    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 from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Washington, D.C. 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 Washington, D.C. 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.5Boarding
7.2Comfort
6.5Food
6.9Entertainment
8.0Crew
Airline reviews

British Airways staff are very polite and willing to help.

10.0 ExcellentAnonymous, Apr 2025SFO - LHR
Read more American Airlines reviews

British Airways staff are very polite and willing to help.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Standard. No different than a discount carrier on a short trip.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

I blame kayak for my last trip to dca. Kayak cancelled my direct flight and put on a one stop flight and made lost whole day from my vacation and had not even refunded my ticket.

I flew out of Reagan National. My flight was delayed, delayed, delayed, and then canceled ...THREE TIMES over TWO DAYS. Staff were seemingly not empowered to provide information on why the flights were screwed up. A real nightmare.

I had two wonderful flights - very relaxing and got me there early!

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

Service was very good. Because I use a cane, I was allowed to use Priority Boarding. Biggest problem was extremely limited leg room in Economy class seats. For airplane food, it was alright.

Was late but that airport/storm fault. Flight was full but comfortable. Food quite nice. Unfortunate that I had a rather miserable attendant, others were much friendlier

Everything you need to know for your flight from Washington, D.C. to Belfast

Cabin class types available on flights from Washington, D.C. to Belfast

Cabin classes available on flights from Washington, D.C. to Belfast. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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