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.

£599 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

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

£599Multiple 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

£627Multiple Airlines

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

£679British 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

£679British Airways

Mon, 1 Feb - Fri, 5 Feb

17:45 - 14:15PDX Portland-BHD Belfast City

12h 30m1 stop London Heathrow

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

17h 05m1 stop London Heathrow

£680British Airways

Sun, 17 Jan - Thu, 21 Jan

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

14h 05m1 stop London Heathrow

11:05 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

£680British Airways

Sun, 18 Oct - Sun, 25 Oct

15:40 - 22:30SEA Seattle/Tacoma Intl-BFS Belfast Intl

22h 50m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Bristol

09:25 - 20:40BFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 15m2 stops London Gatwick Reykjavik Keflavik Intl

£706Multiple Airlines

Mon, 5 Oct - Thu, 22 Oct

20:20 - 19:25SEA Seattle/Tacoma Intl-BHD Belfast City

15h 05m1 stop London Heathrow

12:45 - 18:25BHD Belfast City-SEA Seattle/Tacoma Intl

13h 40m1 stop London Heathrow

£706British Airways

Mon, 5 Oct - Thu, 22 Oct

20:20 - 19:25SEA Seattle/Tacoma Intl-BHD Belfast City

15h 05m1 stop London Heathrow

12:45 - 18:25BHD Belfast City-SEA Seattle/Tacoma Intl

13h 40m1 stop London Heathrow

£707British Airways

Tue, 20 Oct - Tue, 27 Oct

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

13h 20m2 stops Reykjavik Keflavik Intl Glasgow Intl

17:05 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

31h 55m3 stops London Stansted Oslo Gardermoen Reykjavik Keflavik Intl

£714Multiple Airlines

Useful Info

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.