WAS - BFS

$540 Find Cheap Flights from Washington, D.C. to Belfast Intl 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 Washington, D.C. to Belfast departing on 9/16. 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 Intl 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
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Flights Deals

Cheap Flights from Washington, D.C. to Belfast Intl (WAS-BFS)

 
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 Intl 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 Washington, D.C. to Belfast

Tue, Sep 16 - Mon, Sep 22
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6:50 pm - 11:10 pmBWI-BFS
23h 20m2 stops
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6:45 am - 5:40 pmBFS-BWI
15h 55m2 stops
Sat, Sep 13 - Sat, Sep 20
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6:50 pm - 11:05 pmBWI-BFS
23h 15m2 stops
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6:55 am - 5:40 pmBFS-BWI
15h 45m2 stops
Fri, Sep 12 - Fri, Sep 19
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6:50 pm - 1:50 pmBWI-BFS
14h 00m2 stops
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6:15 am - 5:40 pmBFS-BWI
16h 25m2 stops
Fri, Sep 12 - Fri, Sep 19
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11:15 pm - 8:05 pmIAD-BFS
15h 50m2 stops
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6:05 am - 10:10 pmBFS-IAD
21h 05m2 stops
Fri, Sep 12 - Fri, Sep 19
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6:50 pm - 10:35 pmBWI-BFS
22h 45m2 stops
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6:05 am - 12:58 amBFS-BWI
23h 53m3 stops
Sat, Sep 13 - Sat, Sep 20
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11:15 pm - 9:05 pmIAD-BFS
16h 50m2 stops
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7:30 am - 7:20 pmBFS-IAD
16h 50m2 stops
Fri, Sep 12 - Fri, Sep 19
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6:50 pm - 10:35 pmBWI-BFS
22h 45m3 stops
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6:05 am - 12:58 amBFS-BWI
23h 53m3 stops
Tue, Sep 16 - Mon, Sep 22
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6:50 pm - 10:45 pmBWI-BFS
22h 55m2 stops
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8:15 pm - 5:40 pmBFS-BWI
26h 25m3 stops
Tue, Sep 16 - Mon, Sep 22
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6:50 pm - 9:30 pmBWI-BFS
21h 40m3 stops
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8:15 pm - 5:40 pmBFS-BWI
26h 25m3 stops
Wed, Aug 27 - Wed, Sep 3
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11:15 pm - 10:15 pmIAD-BFS
18h 00m2 stops
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7:25 am - 3:20 pmBFS-IAD
36h 55m3 stops
Booking Insights

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 Intl Airport?

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 Intl Airport, 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 Intl Airport is February, where tickets cost $618 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,232 and $1,023 respectively.

Good to know

Low seasonOctober
Cheapest flight$540
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 35% increase in price.
Flight from Baltimore 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 Washington, D.C. to Belfast Intl Airport flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Belfast Intl Airport was $540 for a round-trip ticket.

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

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

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

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

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

  • 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 Intl Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport 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 Intl 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 Intl Airport 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 Intl 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 Intl Airport from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the 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
7.2Comfort
7.5Boarding
8.0Crew
6.9Entertainment
6.5Food
Airline reviews

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

6.0 GoodA, Jul 2025JFK - LHR
Read more American Airlines reviews

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

Pitch was very small. Knees were on the seat back in front of me.

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

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.

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

Old tired plane, Uncomfortable business class seat. Breakfast dreadful and meagre. At least flight was on time!

The crew is very friendly and helpful. The food is good for airplane food. The flight is long and hard to sleep. The leg space is great. The plane arrived in plenty of time.

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The entertainment selection was ok, but overall not bad! The crew was great.

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

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