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$382 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 6/9. 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
0 bags
Sat 6/29
Sat 7/6

Search 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
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

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

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

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:45 pm - 5:25 pmIAD-BHD
13h 40m1 stop
11:50 am - 8:30 pmBHD-IAD
13h 40m1 stop
$565British Airways
Find Deal
Tue, Aug 27 - Wed, Sep 11
11:15 am - 12:55 pmBWI-BHD
20h 40m2 stops
1:40 pm - 7:40 pmBHD-BWI
11h 00m1 stop
$569American Airlines
Find Deal
Tue, Aug 27 - Wed, Sep 11
9:25 pm - 1:25 pmBWI-BHD
11h 00m1 stop
11:50 am - 7:40 pmBHD-BWI
12h 50m1 stop
$573British Airways
Find Deal
Wed, Oct 16 - Fri, Oct 25
8:30 pm - 9:10 pmBWI-BFS
19h 40m2 stops
9:25 pm - 5:40 pmBFS-BWI
25h 15m2 stops
$670
Find Deal
Tue, Sep 17 - Sat, Sep 21
8:24 am - 11:10 pmBWI-BFS
33h 46m3 stops
9:25 pm - 5:40 pmBFS-BWI
25h 15m2 stops
$699
Find Deal
Tue, Sep 17 - Sat, Sep 21
5:30 pm - 4:50 pmBWI-BHD
18h 20m2 stops
5:20 pm - 11:24 pmBHD-BWI
35h 04m2 stops
$700Delta
Find Deal
Thu, Oct 17 - Sat, Oct 26
5:25 pm - 4:50 pmIAD-BHD
18h 25m1 stop
5:20 pm - 3:57 pmBHD-IAD
27h 37m2 stops
$742Delta
Find Deal
Sat, Aug 10 - Sun, Aug 18
5:25 pm - 4:50 pmIAD-BHD
18h 25m1 stop
5:20 pm - 3:35 pmBHD-IAD
27h 15m1 stop
$1,133Virgin Atlantic
Find Deal
Thu, Jun 27 - Thu, Jul 4
10:20 pm - 9:25 amIAD-BHD
54h 05m2 stops
3:35 pm - 7:25 pmBHD-IAD
32h 50m2 stops
$1,137Lufthansa
Find Deal
Thu, Jul 11 - Fri, Jul 19
6:00 pm - 2:50 pmIAD-BHD
15h 50m2 stops
10:15 am - 3:20 pmBHD-IAD
34h 05m2 stops
$1,182Lufthansa
Find Deal
Mon, Jun 10 - Sun, Jun 16

Flights from Washington, D.C. to Belfast - Travel Insights & Trends

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 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 September, where tickets cost $683 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,183 and $977 respectively.

Which airlines provide the cheapest flights from Washington, D.C. to Belfast?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Washington, D.C. to Belfast found on KAYAK was with American Airlines for $590. British Airways proposed a round-trip connection from $565 and American Airlines from $569.

Good to know

Cheapest flight

$382
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 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 $382 for a one-way ticket and $565 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, SkyTeam, and Star Alliance 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.

See more FAQs

Book cheap flights from Washington, D.C. to Belfast

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Belfast found on KAYAK in the last 72 hours.
6/9Sun
3 stops
58h 40mBWI-BFS
$382
6/8Sat
3 stops
58h 38mBWI-BFS
$393
6/9Sun
3 stops
54h 50mBWI-BHD
$399
6/8Sat
3 stops
44h 33mBWI-BHD
$438
6/8Sat
2 stopsBritish Airways
13h 37mIAD-BHD
$590
6/8Sat
2 stopsAmerican Airlines
13h 49mDCA-BHD
$590
6/9Sun
2 stopsBritish Airways
14h 05mDCA-BHD
$591
7/2Tue
1 stopAmerican Airlines
13h 40mIAD-BHD
$643
6/9Sun
1 stopKLM
18h 25mIAD-BHD
$1,482
6/8Sat
1 stopAir France
18h 00mIAD-BHD
$1,532

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