£323 Find Cheap Flights from Belfast to Washington

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 Washington departing on 3/5. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Washington, 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, as well as popular online travel agencies
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Flight Deals
Booking Insights
Flight Deals

Book Cheap Belfast to Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast to Washington 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 Washington

Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 18:25
BHD
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SEA
16h 20m
1 stop
British Airways Logo
13:19 - 17:40
SEA
-
BHD
20h 21m
2 stops
£693British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 18:25
BHD
-
SEA
16h 20m
1 stop
British Airways Logo
13:30 - 13:25
SEA
-
BHD
15h 55m
1 stop
£694British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 00:36
BHD
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SEA
22h 31m
2 stops
British Airways Logo
13:30 - 13:25
SEA
-
BHD
15h 55m
1 stop
£694British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 22:38
BHD
-
SEA
20h 33m
2 stops
British Airways Logo
13:30 - 13:25
SEA
-
BHD
15h 55m
1 stop
£695British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 00:36
BHD
-
SEA
22h 31m
2 stops
British Airways Logo
13:19 - 14:35
SEA
-
BHD
17h 16m
2 stops
£697British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 00:36
BHD
-
SEA
22h 31m
2 stops
British Airways Logo
13:19 - 17:40
SEA
-
BHD
20h 21m
2 stops
£698British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 22:38
BHD
-
SEA
20h 33m
2 stops
British Airways Logo
11:16 - 14:35
SEA
-
BHD
19h 19m
2 stops
£699British Airways
Wed, 22 Apr - Sun, 26 Apr
British Airways Logo
10:05 - 18:25
BHD
-
SEA
16h 20m
1 stop
British Airways Logo
13:30 - 13:25
SEA
-
BHD
15h 55m
1 stop
£717British Airways
Booking Insights

KAYAK's insights & trends for Belfast to Washington flights

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

How long does a flight from Belfast to Washington take?

The duration of a flight to Washington depends on your arrival airport. The shortest route to Washington from Belfast is to Seattle, which takes 16h 20m.

Good to know - Cheap tickets from Belfast to Washington

Cheapest flight£323
Flight from Belfast Intl Airport to Seattle

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Belfast to Washington?

    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.

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

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

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

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

    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 from Belfast to Washington 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 Washington

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Washington. 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 Washington? 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.
7.1
American AirlinesOverall score based on 11464 reviews
6.9Entertainment
7.9Crew
7.2Comfort
6.4Food
7.5Boarding
Airline reviews

Movie selections were very limited. Meals were not f So good.

4.0 OkayPrincess, Mar 2026
HND - JFK
Read more American Airlines reviews

Movie selections were very limited. Meals were not f So good.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

AA is flying sub par aging 787's to Tokyo. I fly other 787's long haul and these are at the bottom. Seats don't work well, tray tables don't work well and were dirty. The flight was great, the plane was not.

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Flights were constantly delayed. CRW took 50 minutes to get bags

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

An delay of almost 3 hours while passengers were already in the plane kept us very uncomfortable. The food was also very limited. A bad experience overall.

I understand that there is a catering issue - water should be the minimum stock. During the flight, not once that the attendants came through with water. The conversations in the kitchen were very loud and they were swearing. I do not expect any white glove service, at the minimum, we should be cordial. It was almost an inconveniece that we were on the flight. And it made us feel if you even dare question us, we'll make you deplane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Everything you need to know for your flight from Belfast to Washington

Cabin class types available on flights to Washington

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