How does KAYAK find such low prices on flights from Seattle to Northern Ireland?

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 Seattle to Northern Ireland. 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 Seattle to Northern Ireland?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Northern Ireland 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 Seattle to Northern Ireland?

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 from Seattle to Northern Ireland with an airline and back 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 Seattle to Northern Ireland?

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 from Seattle to Northern Ireland 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>

What is the cheapest time of day to fly to Northern Ireland?

The cheapest time of day to fly to Northern Ireland is generally in the afternoon , when round-trip flights cost $794 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,000.

$278 Cheap Flights from Seattle to Northern Ireland

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

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Flight Deals

Book Cheap Seattle to Northern Ireland Plane Tickets

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Northern Ireland 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 round-trip flight deals from Seattle to Northern Ireland

Sat, Mar 7 - Tue, Mar 17

6:50 pm - 7:40 pm

SEA

BHD

16h 50m1 stop

8:45 am - 5:55 pm

BHD

SEA

16h 10m1 stop

$604British Airways

Fri, Jan 30 - Fri, Feb 6

2:35 pm - 10:00 pm

SEA

BFS

23h 25m2 stops

8:05 am - 5:00 pm

BFS

SEA

16h 55m2 stops

$605Multiple Airlines

Sat, Mar 7 - Wed, Mar 18

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

3:40 pm - 5:55 pm

BHD

SEA

33h 15m1 stop

$620British Airways

Sat, Mar 7 - Tue, Mar 17

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

6:35 am - 11:30 pm

BHD

SEA

23h 55m2 stops

$623British Airways

Fri, Jan 30 - Tue, Feb 3

1:35 pm - 10:30 am

SEA

BHD

12h 55m1 stop

6:35 am - 11:30 am

BHD

SEA

12h 55m1 stop

$624British Airways

Fri, Jan 30 - Tue, Feb 3

1:35 pm - 10:30 am

SEA

BHD

12h 55m1 stop

11:25 am - 4:55 pm

BHD

SEA

13h 30m1 stop

$625British Airways

Sat, Jan 31 - Sat, Feb 7

2:35 pm - 1:30 pm

SEA

BFS

14h 55m2 stops

7:00 am - 5:00 pm

BFS

SEA

18h 00m2 stops

$686Multiple Airlines

Thu, Mar 19 - Mon, Mar 30

7:50 pm - 4:40 pm

SEA

BHD

13h 50m1 stop

7:30 pm - 9:54 pm

BHD

SEA

34h 24m2 stops

$697British Airways

Thu, Mar 19 - Mon, Mar 30

7:50 pm - 4:40 pm

SEA

BHD

13h 50m1 stop

9:50 am - 6:25 pm

BHD

SEA

16h 35m1 stop

$770British Airways

Sun, Apr 26 - Sun, May 10

1:35 pm - 10:30 am

SEA

BHD

12h 55m1 stop

11:00 am - 6:25 pm

BHD

SEA

15h 25m1 stop

$814British Airways

Booking Insights

KAYAK's insights & trends for Seattle to Northern Ireland flights

Get data-powered insights and trends into flights from Seattle to Northern Ireland to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Seattle to Northern Ireland take?

The duration of a flight to Northern Ireland depends on your arrival airport. The shortest route to Northern Ireland from Seattle is to Belfast, which takes 12h 55m.

Find deals

Low season	April
High season	January
Cheapest flight	$278

Best time to beat the crowds with an average 22% drop in price.

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

Flight from Seattle to Belfast Intl Airport

How does KAYAK find such low prices on flights from Seattle to Northern Ireland?
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 Seattle to Northern Ireland.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Northern Ireland?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Northern Ireland 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 Seattle to Northern Ireland?
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 from Seattle to Northern Ireland with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Northern Ireland?
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 from Seattle to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
What is the cheapest time of day to fly to Northern Ireland?
The cheapest time of day to fly to Northern Ireland is generally in the afternoon, when round-trip flights cost $794 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,000.

Everything you need to know for your flight from Seattle to Northern Ireland

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Popular routes

Return flight deals

Information on your arrival and departure airports

Seattle (SEA)

$278 Find Cheap Flights from Seattle to Northern Ireland

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

Book Cheap Seattle to Northern Ireland Plane Tickets

Recent round-trip flight deals from Seattle to Northern Ireland

Recent one-way flight deals from Seattle to Northern Ireland

Recent last minute flight deals from Seattle to Northern Ireland

KAYAK's insights & trends for Seattle to Northern Ireland flights

Get data-powered insights and trends into flights from Seattle to Northern Ireland to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Seattle to Northern Ireland take?

The duration of a flight to Northern Ireland depends on your arrival airport. The shortest route to Northern Ireland from Seattle is to Belfast, which takes 12h 55m.

Good to know

FAQs - booking Northern Ireland flights

How does KAYAK find such low prices on flights from Seattle to Northern Ireland?

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 Seattle to Northern Ireland.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Northern Ireland?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Northern Ireland 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 Seattle to Northern Ireland?

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 from Seattle to Northern Ireland with an airline and back with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Northern Ireland?

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 from Seattle to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

What is the cheapest time of day to fly to Northern Ireland?

Everything you need to know for your flight from Seattle to Northern Ireland

Information on your arrival and departure airports

Cabin class types available on flights to Northern Ireland

Complete your trip to Northern Ireland with a hotel stay or car rental

Flights to other popular destinations

Flights from other airports in Seattle to Northern Ireland

Flights from Seattle to popular cities in Northern Ireland

Find deals for your return flight