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>

£326 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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41,299,237 searches in the past 7 days on KAYAK

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Cheapest return fare

£452

British Airways

Sat 7/3Tue 17/3

SEA - BHD • 1 stop

Cheapest one-way flight

£326

Multiple Airlines

Thu 28/5

SEA - BFS • 2 stops

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

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Flight Deals

Cheap Flights from Washington to Belfast

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

Round-trip

One-way

Recent return flight deals from Washington to Belfast

Sat, 7 Mar - Tue, 17 Mar

18:50 - 19:40

SEA

BHD

16h 50m

1 stop

08:45 - 17:55

BHD

SEA

16h 10m

1 stop

£452British Airways

Sat, 7 Mar - Tue, 17 Mar

18:50 - 16:45

SEA

BHD

13h 55m

1 stop

11:25 - 17:55

BHD

SEA

13h 30m

1 stop

£453British Airways

Sat, 7 Mar - Tue, 17 Mar

13:35 - 14:15

SEA

BHD

16h 40m

1 stop

11:25 - 00:24

BHD

SEA

19h 59m

2 stops

£455British Airways

Wed, 4 Mar - Sun, 8 Mar

18:50 - 16:35

SEA

BHD

13h 45m

1 stop

20:25 - 17:55

BHD

SEA

28h 30m

1 stop

£457British Airways

Sat, 7 Mar - Wed, 18 Mar

18:50 - 16:45

SEA

BHD

13h 55m

1 stop

17:40 - 17:55

BHD

SEA

31h 15m

1 stop

£468British Airways

Sun, 3 May - Tue, 12 May

13:29 - 18:45

SEA

BHD

21h 16m

2 stops

06:30 - 11:35

BHD

SEA

13h 05m

1 stop

£470British Airways

Sun, 3 May - Tue, 12 May

13:29 - 18:45

SEA

BHD

21h 16m

2 stops

06:30 - 22:26

BHD

SEA

23h 56m

2 stops

£472British Airways

Sun, 3 May - Tue, 12 May

17:30 - 16:55

SEA

BHD

15h 25m

1 stop

09:50 - 16:30

BHD

SEA

14h 40m

1 stop

£482Multiple Airlines

Wed, 4 Mar - Sun, 8 Mar

17:45 - 07:30

PDX

BHD

29h 45m

1 stop

20:25 - 16:55

BHD

PDX

27h 30m

1 stop

£499British Airways

Fri, 20 Mar - Sun, 29 Mar

06:30 - 16:50

PDX

BHD

27h 20m

2 stops

06:30 - 11:10

BHD

PDX

12h 40m

1 stop

£1,287Delta

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.

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

Premium Economy Class flights to Belfast

Economy class flights to Belfast

£326 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

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