$372 Find Cheap Flights from Washington to Northern Ireland

1 adult
1 adult, Economy, 0 bags

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Useful Info

Good to know

Low seasonMarch
Cheapest flight$372
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Seattle to Belfast Intl Airport

FAQs for booking flights from Washington to Northern Ireland

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

    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 to Northern Ireland.

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

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

    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 from Washington to Northern Ireland 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 Washington to Northern Ireland?

    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 Washington to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many airports are there in Northern Ireland?

    There are 3 airports in Northern Ireland. The busiest airport is Belfast City Airport (BHD), with 56% of all flights arriving there.

  • What is the cheapest day to fly to Northern Ireland?

    Based on KAYAK data, the cheapest day to fly to Northern Ireland is Tuesday where round-trip tickets can be as cheap as $724. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are $1,208 on average.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the afternoon, when round-trip flights cost $794 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,000.

  • How long is the flight to Northern Ireland?

    An average nonstop flight from Washington to Northern Ireland takes 12h 42m, covering a distance of 4523 miles. The shortest route is Portland (PDX) to Belfast Intl Airport (BFS) with an average flight time of 12h 30m.

  • What is the most popular destination in Northern Ireland?

    Based on KAYAK flight searches, the most popular destination is Belfast (100% of total searches to Northern Ireland).

Reviews of the top airline flying from Washington to Northern Ireland

 
Need help choosing which airline to fly with from Washington to Northern Ireland? 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.
6.7
British AirwaysOverall score based on 7485 reviews
6.4Entertainment
6.9Boarding
6.3Food
6.7Comfort
7.6Crew
Airline reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

10.0 Excellentshamarcus, Oct 2025SEA - LHR
Read more British Airways reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Everything you need to know for your flight to Northern Ireland

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.
First Class flights to Northern Ireland
Business Class flights to Northern Ireland
Prem Econ Class flights to Northern Ireland
Economy Class flights to Northern Ireland

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