£250 Find Cheap Flights from Northern Ireland to Washington

1 adult
1 adult, Economy

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

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

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

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

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

Useful Info

Good to know - Cheap tickets from Northern Ireland to Washington

Low seasonJanuary
High seasonAugust
Cheapest flight£250
Best time to beat the crowds (0% less expensive on average)
Most popular time to fly (25% 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).

Reviews of the 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 7067 reviews
6.7Comfort
7.6Crew
6.4Entertainment
6.3Food
6.8Boarding
Airline reviews

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

2.0 MediocreAnonymous, Jun 2025LHR - DEN
Read more British Airways reviews

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

All service prior to the flight was terrible: online check-in not working, no customer service tel,, multiple airport scanners not working, A huge mess.

CONSTANT ERROR MESSAGE THAT THE WIFI COULD NOT BE PURCHASED DUE TO INABILITY TO CONNECT PAYMENT SYSTEM VIA SATELLITE. THIS HAPPENED IN BOTH DIRECTIONS. THE MAIN REASON I TRAVEL IN PRIORITY IS TO BE ABLE TO WORK FOR WHICH I NEED ACCESS TO INTERNET. .

They lost my luggage. Lady who was helping with it in Austin was rude. Not very helpful!

Waited 3.25 hours in plane only to have the flight cancelled.

More space, of course. a footrest! more room to walk. Movie selection was awful. Some good documentaries would help if the movies can't be better. The flight itself was great, crew was great.

They are disorganized….show your flight info half an hour before take off, so you are running all over the place. Customer personnel are not helpful, and act like you are bothering them when you asked for assistance - very rude!!! My very first and last time flying with British airways… good thing we have other options.

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.

Book cheap flights from Northern Ireland to Washington

Recent return flight deals

30/8Sat
1 stopBritish Airways
12h 30mBHD-SEA
10/9Wed
1 stopBritish Airways
14h 20mSEA-BHD
£489
27/8Wed
1 stopAmerican Airlines
12h 45mBHD-SEA
11/9Thu
2 stopsAmerican Airlines
22h 18mSEA-BHD
£549
31/8Sun
1 stopBritish Airways
23h 30mBHD-SEA
11/9Thu
1 stopBritish Airways
13h 40mSEA-BHD
£552
27/8Wed
2 stopsAmerican Airlines
24h 51mBHD-SEA
11/9Thu
2 stopsAmerican Airlines
20h 20mSEA-BHD
£554
30/8Sat
2 stops
36h 16mBHD-SEA
10/9Wed
1 stop
16h 25mSEA-BHD
£554
27/8Wed
1 stopAmerican Airlines
12h 45mBHD-SEA
9/9Tue
1 stopAmerican Airlines
15h 30mSEA-BHD
£560
29/8Fri
1 stopDelta
13h 05mBHD-SEA
9/9Tue
2 stopsDelta
19h 15mSEA-BHD
£597
30/8Sat
2 stopsKLM
17h 49mBHD-SEA
9/9Tue
2 stopsKLM
18h 30mSEA-BHD
£614
24/8Sun
2 stopsDelta
17h 54mBHD-SEA
4/9Thu
2 stopsDelta
20h 50mSEA-BHD
£617
29/8Fri
1 stopKLM
30h 30mBHD-SEA
10/9Wed
2 stopsKLM
16h 50mSEA-BHD
£628

Search by stops

Search by airline

Search by price

Recent one-way flight deals

20/10Mon
3 stops
45h 29mBFS-SEA
£250
23/10Thu
3 stops
57h 10mBFS-SEA
£254
22/10Wed
3 stops
56h 59mBFS-SEA
£264
21/10Tue
3 stops
35h 04mBFS-SEA
£267
24/10Fri
3 stops
34h 00mBFS-SEA
£283
21/10Tue
2 stopsAer Lingus
34h 30mBHD-SEA
£541
20/10Mon
1 stopBritish Airways
28h 35mBHD-SEA
£680
22/10Wed
1 stopBritish Airways
12h 45mBHD-SEA
£685
30/7Wed
2 stopsAer Lingus
18h 55mBHD-SEA
£817
24/10Fri
1 stopIberia
19h 45mBHD-SEA
£861

Search by stops

Search by airline

Search by price

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.
First Class flights to Washington
Business Class flights to Washington
Prem Econ Class flights to Washington
Economy class flights to Washington

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.