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 round-trip 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>

$412 CHEAP FLIGHTS from Washington to Belfast

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

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Cheap Flights from Washington to Belfast

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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

Recent round-trip flight deals from Washington to Belfast

Sun, Sep 14 - Mon, Sep 29

7:00 pm - 10:25 pmSEA-BFS

19h 25m2 stops

6:45 am - 8:40 pmBFS-SEA

21h 55m2 stops

$564

Find Deal

Tue, Sep 16 - Tue, Sep 23

3:45 pm - 7:25 pmSEA-BFS

19h 40m2 stops

6:15 am - 8:40 pmBFS-SEA

22h 25m2 stops

$597

Find Deal

Sun, Sep 14 - Mon, Sep 29

7:00 pm - 8:25 pmSEA-BHD

17h 25m2 stops

7:05 am - 8:40 pmBHD-SEA

21h 35m2 stops

$657

Find Deal

Sat, Sep 6 - Sat, Sep 20

7:25 pm - 5:15 pmPDX-BHD

13h 50m1 stop

7:00 pm - 5:06 pmBHD-PDX

30h 06m2 stops

$712British Airways

Find Deal

Sat, Sep 6 - Sat, Sep 20

6:05 am - 10:10 amPDX-BHD

20h 05m2 stops

7:00 pm - 5:06 pmBHD-PDX

30h 06m2 stops

$716British Airways

Find Deal

Sun, Sep 14 - Mon, Sep 29

5:40 pm - 4:55 pmSEA-BHD

15h 15m1 stop

5:25 pm - 4:06 pmBHD-SEA

30h 41m2 stops

$828KLM

Find Deal

Sun, Sep 14 - Mon, Sep 29

9:40 am - 4:55 pmSEA-BHD

23h 15m2 stops

6:30 am - 4:06 pmBHD-SEA

17h 36m2 stops

$890Delta

Find Deal

Wed, Dec 3 - Sun, Dec 7

11:15 am - 4:50 pmSEA-BHD

21h 35m2 stops

5:20 pm - 11:50 amBHD-SEA

26h 30m1 stop

$942Delta

Find Deal

Tue, Dec 2 - Sun, Dec 7

1:23 am - 2:15 pmSEA-BHD

28h 52m2 stops

6:30 am - 6:20 pmBHD-SEA

19h 50m2 stops

$985American Airlines

Find Deal

Wed, Dec 3 - Sun, Dec 7

11:15 am - 4:50 pmSEA-BHD

21h 35m2 stops

6:30 am - 11:50 amBHD-SEA

13h 20m1 stop

$995KLM

Find Deal

Useful Info

Cheapest flight	$412

Flight from Portland 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 round-trip 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

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$412 Find Cheap Flights from Washington to Belfast

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

Cheap Flights from Washington to Belfast

Recent round-trip flight deals from Washington to Belfast

Recent one-way flight deals from Washington to Belfast

Good to know

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 round-trip 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 rental

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