£404 Find Cheap Flights from Northern Ireland to Washington

1 adult
1 adult, Economy

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Good to know - Cheap tickets from Northern Ireland to Washington

Low seasonJanuary
High seasonAugust
Cheapest flight£404
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (26% more expensive on average)
Flight from Belfast Intl Airport to Seattle

FAQs for booking flights from Northern Ireland to Washington

  • How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to Washington.

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

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

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally in the morning, when round-trip flights cost £870 on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is £870.

  • How long is the flight to Washington?

    An average direct flight from Northern Ireland to Washington takes 12h 30m, covering a distance of 4466 miles. The shortest route is Belfast Intl Airport (BFS) to Seattle (SEA) with an average flight time of 12h 30m.

  • What is the most popular destination in Washington?

    Based on KAYAK flight searches, the most popular destination is Seattle (100% of total searches to Washington).

Top airline flying from Northern Ireland to Washington

 
Need help choosing which airline to fly with from Northern Ireland 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.
6.6
British AirwaysOverall score based on 7008 reviews
6.3Food
6.4Entertainment
6.8Boarding
6.7Comfort
7.6Crew
Airline reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

6.0 GoodPhilip, Jun 2025LHR - BWI
Read more British Airways reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

Book cheap flights from Northern Ireland to Washington

Recent one-way flight deals

26/6Thu
3 stops
40h 11mBFS-SEA
£404
25/6Wed
3 stops
49h 01mBFS-SEA
£417
26/6Thu
2 stops
38h 58mBFS-SEA
£425
25/6Wed
2 stops
47h 48mBFS-SEA
£439
25/6Wed
2 stopsAer Lingus
31h 00mBHD-SEA
£578
25/6Wed
1 stopBritish Airways
12h 45mBHD-SEA
£626
26/6Thu
2 stopsAer Lingus
19h 00mBHD-SEA
£637
30/7Wed
2 stopsAer Lingus
18h 55mBHD-SEA
£801
30/7Wed
2 stopsBritish Airways
28h 40mBHD-SEA
£806
26/6Thu
1 stopBritish Airways
25h 05mBHD-SEA
£931

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Everything you need to know for your flight to Washington

Cabin class types available on flights to Northern Ireland

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

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