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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

£429 CHEAP FLIGHTS from Washington to Belfast

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

...and more

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Cheapest return fare

£429

British Airways

Sun 22/3Tue 31/3

SEA - BHD • 1 stop

Cheapest one-way flight

£4,435

British Airways

Tue 3/2

SEA - BHD • 1 stop

Start a new search

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We hope you love your trip to Belfast!

Flight Deals

Cheap Flights from Washington to Belfast

Here are some of the best deals found on KAYAK recently from the most popular airlines for return 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.

Round-trip

One-way

Last minute

Recent return flight deals from Washington to Belfast

Sun, 22 Mar - Tue, 31 Mar

19:50 - 18:40

SEA

BHD

15h 50m1 stop

09:35 - 11:35

BHD

SEA

34h 00m1 stop

£429British Airways

Wed, 25 Mar - Wed, 1 Apr

13:37 - 14:15

SEA

BHD

17h 38m2 stops

10:00 - 18:25

BHD

SEA

16h 25m1 stop

£437British Airways

Wed, 25 Mar - Wed, 1 Apr

19:50 - 16:35

SEA

BHD

13h 45m1 stop

16:05 - 18:25

BHD

SEA

34h 20m1 stop

£439British Airways

Sun, 18 Jan - Sun, 25 Jan

14:35 - 18:55

SEA

BFS

20h 20m2 stops

07:10 - 17:00

BFS

SEA

17h 50m2 stops

£440Multiple Airlines

Sun, 22 Mar - Thu, 2 Apr

19:50 - 16:50

SEA

BHD

14h 00m1 stop

06:35 - 18:25

BHD

SEA

19h 50m1 stop

£441British Airways

Tue, 24 Mar - Tue, 31 Mar

07:15 - 14:50

SEA

BHD

24h 35m2 stops

20:20 - 11:35

BHD

SEA

23h 15m1 stop

£441British Airways

Thu, 15 Jan - Mon, 19 Jan

06:00 - 16:50

PDX

BHD

26h 50m2 stops

17:20 - 18:50

BHD

PDX

33h 30m2 stops

£491Virgin Atlantic

Tue, 17 Mar - Tue, 31 Mar

10:30 - 11:30

PDX

BHD

18h 00m2 stops

09:35 - 20:49

BHD

PDX

19h 14m2 stops

£512Multiple Airlines

Thu, 5 Feb - Mon, 9 Feb

06:00 - 14:00

PDX

BHD

24h 00m2 stops

06:35 - 15:55

BHD

PDX

17h 20m1 stop

£618American Airlines

Tue, 16 Dec - Wed, 24 Dec

05:30 - 16:50

PDX

BHD

27h 20m2 stops

17:20 - 16:16

BHD

PDX

30h 56m2 stops

£788Delta

Useful Info

Cheapest flight	£429

Flight from Seattle to Belfast City Airport

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.

Everything you need to know for your flight to Belfast

Cabin class

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Washington

First Class flights to Belfast

Business Class flights to Belfast

Prem Econ Class flights to Belfast

Economy class flights to Belfast

£429 Find Cheap Flights from Washington to Belfast

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

Everything you should know

Cheap Flights from Washington to Belfast

Recent return flight deals from Washington to Belfast

Recent one-way flight deals from Washington to Belfast

Recent last minute flight deals from Washington to Belfast

Good to know - Cheap tickets from Washington to Belfast

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 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.

Everything you need to know for your flight to Belfast

Cabin class types available on flights to Washington

Complete your trip to Belfast with a hotel stay or car hire

Find direct flights for Belfast

Flights to other popular destinations

Flights from domestic origins to Belfast

Choose which airport to fly into in Belfast

Find deals for your return flight