$294 Find Cheap Flights from Washington to Belfast - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Belfast departing on 8/23. 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

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Cheap Flights from Washington to Belfast

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington to Belfast

Sun, Nov 15 - Wed, Nov 18
British Airways Logo
6:45 pm - 4:50 pmSEA  Seattle/Tacoma Intl-BHD Belfast City
14h 05m1 stop London Heathrow
British Airways Logo
9:15 am - 4:50 pmBHD  Belfast City-SEA Seattle/Tacoma Intl
15h 35m1 stop London Heathrow
$907British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:45 pm - 6:40 pmPDX  Portland-BHD Belfast City
16h 55m1 stop London Heathrow
British Airways Logo
9:15 am - 3:50 pmBHD  Belfast City-PDX Portland
14h 35m1 stop London Heathrow
$907British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:45 pm - 6:40 pmPDX  Portland-BHD Belfast City
16h 55m1 stop London Heathrow
British Airways Logo
6:35 am - 3:50 pmBHD  Belfast City-PDX Portland
17h 15m1 stop London Heathrow
$907British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
6:45 pm - 4:50 pmSEA  Seattle/Tacoma Intl-BHD Belfast City
14h 05m1 stop London Heathrow
British Airways Logo
9:15 am - 4:50 pmBHD  Belfast City-SEA Seattle/Tacoma Intl
15h 35m1 stop London Heathrow
$908British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:45 pm - 6:40 pmPDX  Portland-BHD Belfast City
16h 55m1 stop London Heathrow
British Airways Logo
9:15 am - 3:50 pmBHD  Belfast City-PDX Portland
14h 35m1 stop London Heathrow
$908British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
6:45 pm - 4:50 pmSEA  Seattle/Tacoma Intl-BHD Belfast City
14h 05m1 stop London Heathrow
British Airways Logo
9:15 am - 4:50 pmBHD  Belfast City-SEA Seattle/Tacoma Intl
15h 35m1 stop London Heathrow
$909British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:45 pm - 6:40 pmPDX  Portland-BHD Belfast City
16h 55m1 stop London Heathrow
British Airways Logo
6:35 am - 3:50 pmBHD  Belfast City-PDX Portland
17h 15m1 stop London Heathrow
$909British Airways
Sun, Jan 24 - Thu, Jan 28
British Airways Logo
6:45 pm - 6:40 pmSEA  Seattle/Tacoma Intl-BHD Belfast City
15h 55m1 stop London Heathrow
British Airways Logo
3:25 pm - 4:50 pmBHD  Belfast City-SEA Seattle/Tacoma Intl
33h 25m1 stop London Heathrow
$916British Airways
Mon, Oct 5 - Thu, Oct 22
American Airlines Logo
3:14 pm - 3:30 pmSEA  Seattle/Tacoma Intl-BHD Belfast City
16h 16m2 stops Chicago O'Hare Intl London Heathrow
American Airlines Logo
2:20 pm - 11:35 amBHD  Belfast City-SEA Seattle/Tacoma Intl
29h 15m1 stop London Heathrow
$970American Airlines
Sun, Sep 20 - Sun, Sep 27
Multiple Airlines Logo
3:40 pm - 9:00 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
21h 20m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
7:00 am - 5:55 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
42h 55m3 stops London Stansted Stockholm Arlanda Reykjavik Keflavik Intl
$1,004Multiple Airlines
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Good to know

Cheapest flight

$294
Flight from Seattle to Belfast City Airport

FAQs for booking flights from Washington to Belfast

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Belfast

Cabin class types available on flights to Washington

Cabin classes available on flights to Belfast. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Belfast
Business Class flights to Belfast
Premium Economy Class flights to Belfast
Economy Class flights to Belfast