How does KAYAK find such low prices on flights from Washington to Belfast Intl Airport?

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 Intl Airport. 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 Intl Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Washington is likely to change within 7 days, so travellers 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 Intl Airport?

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 Intl Airport 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 Intl Airport?

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 Intl Airport 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>

Cheap Flights from Washington to Belfast Intl Airport (BFS)

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

...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

Multiple Airlines

Fri 30/1Fri 6/2

SEA - BFS • 2 stops

Cheapest one-way flight

£208

Multiple Airlines

Mon 2/2

SEA - BFS • 3 stops

Start a new search

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

We hope you love your trip to Belfast Intl!

Flight Deals

Cheap Flights from Washington to Belfast Intl

Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington to Belfast Intl 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 Intl

Fri, 30 Jan - Fri, 6 Feb

14:35 - 22:00

SEA

BFS

23h 25m2 stops

08:05 - 17:00

BFS

SEA

16h 55m2 stops

£452Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

14:35 - 22:20

SEA

BFS

23h 45m2 stops

06:30 - 17:00

BFS

SEA

18h 30m2 stops

£508Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

14:35 - 13:30

SEA

BFS

14h 55m2 stops

07:00 - 17:00

BFS

SEA

18h 00m2 stops

£513Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

14:35 - 21:40

SEA

BFS

23h 05m2 stops

23:10 - 17:00

BFS

SEA

25h 50m3 stops

£674Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

14:35 - 21:05

SEA

BFS

22h 30m3 stops

07:05 - 17:00

BFS

SEA

17h 55m2 stops

£695Multiple Airlines

Sun, 26 Apr - Sun, 10 May

15:40 - 23:10

SEA

BFS

23h 30m2 stops

06:10 - 20:28

BFS

SEA

22h 18m2 stops

£703Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

14:35 - 22:20

SEA

BFS

23h 45m3 stops

23:10 - 17:00

BFS

SEA

25h 50m3 stops

£709Multiple Airlines

Sun, 26 Apr - Sun, 10 May

15:40 - 23:10

SEA

BFS

23h 30m2 stops

06:10 - 22:20

BFS

SEA

24h 10m3 stops

£717Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

14:35 - 21:05

SEA

BFS

22h 30m3 stops

21:25 - 19:16

BFS

SEA

29h 51m3 stops

£751Multiple Airlines

Fri, 30 Jan - Fri, 6 Feb

14:35 - 15:10

SEA

BFS

16h 35m2 stops

07:50 - 09:31

BFS

SEA

33h 41m3 stops

£752Multiple Airlines

Useful Info

Low season	April
High season	January

Best time to beat the crowds (22% less expensive on average)

Most popular time to fly and prices are also 2% lower on average.

How does KAYAK find such low prices on flights from Washington to Belfast Intl Airport?
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 Intl Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Belfast Intl Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Washington is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington to Belfast Intl Airport?
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 Intl Airport 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 Intl Airport?
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 Intl Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Belfast Intl Airport (BFS)

£208 Find Cheap Flights from Washington to Belfast Intl Airport

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

Everything you should know

Cheap Flights from Washington to Belfast Intl

Recent return flight deals from Washington to Belfast Intl

Recent one-way flight deals from Washington to Belfast Intl

Recent last minute flight deals from Washington to Belfast Intl

Good to know - Cheap tickets from Washington to Belfast Intl Airport

FAQs for booking Washington to Belfast Intl Airport flights

How does KAYAK find such low prices on flights from Washington to Belfast Intl Airport?

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 Intl Airport.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Washington is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington to Belfast Intl Airport?

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 Intl Airport 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 Intl Airport?

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 Intl Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near Belfast Intl?

Everything you need to know for your flight to Belfast Intl

Information on your arrival and departure airports

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

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Choose which airport to fly into in Belfast

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