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 return 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.

£238 CHEAP FLIGHTS from Washington to Belfast

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Cheap Flights from Washington to Belfast

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Recent return flight deals from Washington to Belfast

Thu, 15 Oct - Wed, 28 Oct

19:00 - 22:25SEA Seattle/Tacoma Intl-BFS Belfast Intl

19h 25m2 stops Reykjavik Keflavik Intl Amsterdam Schiphol

07:00 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 00m2 stops Amsterdam Schiphol Reykjavik Keflavik Intl

£598Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

19:00 - 16:20SEA Seattle/Tacoma Intl-BFS Belfast Intl

13h 20m2 stops Reykjavik Keflavik Intl Glasgow Intl

08:35 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

16h 25m2 stops Glasgow Intl Reykjavik Keflavik Intl

£626Multiple Airlines

Mon, 5 Oct - Thu, 22 Oct

17:45 - 16:55SEA Seattle/Tacoma Intl-BHD Belfast City

15h 10m1 stop Amsterdam Schiphol

17:30 - 11:52BHD Belfast City-SEA Seattle/Tacoma Intl

26h 22m1 stop Amsterdam Schiphol

£628KLM

Sat, 24 Oct - Fri, 6 Nov

13:05 - 17:45PDX Portland-BHD Belfast City

20h 40m1 stop Amsterdam Schiphol

09:40 - 21:49BHD Belfast City-PDX Portland

20h 09m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£651Multiple Airlines

Sat, 24 Oct - Fri, 6 Nov

14:00 - 17:45PDX Portland-BHD Belfast City

19h 45m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

09:40 - 21:49BHD Belfast City-PDX Portland

20h 09m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£654KLM

Sun, 7 Feb - Tue, 9 Feb

17:45 - 16:50PDX Portland-BHD Belfast City

15h 05m1 stop London Heathrow

19:30 - 15:50BHD Belfast City-PDX Portland

28h 20m1 stop London Heathrow

£657British Airways

Mon, 1 Feb - Fri, 5 Feb

17:45 - 16:05PDX Portland-BHD Belfast City

14h 20m1 stop London Heathrow

06:45 - 15:50BHD Belfast City-PDX Portland

17h 05m1 stop London Heathrow

£678British Airways

Sun, 17 Jan - Thu, 21 Jan

18:45 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

14h 05m1 stop London Heathrow

06:30 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

18h 20m1 stop London Heathrow

£678British Airways

Sun, 7 Feb - Tue, 9 Feb

13:33 - 18:50PDX Portland-BHD Belfast City

21h 17m2 stops Chicago O'Hare Intl London Heathrow

19:30 - 15:50BHD Belfast City-PDX Portland

28h 20m1 stop London Heathrow

£681British Airways

Mon, 5 Oct - Thu, 22 Oct

15:14 - 15:30SEA Seattle/Tacoma Intl-BHD Belfast City

16h 16m2 stops Chicago O'Hare Intl London Heathrow

14:20 - 11:35BHD Belfast City-SEA Seattle/Tacoma Intl

29h 15m1 stop London Heathrow

£682American Airlines

Useful Info

Cheapest flight	£238

Flight from Seattle 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 return 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.