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Cheap flights from Northern Ireland to Seattle from £363

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Northern Ireland to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
12:45 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
30h 50m1 stop London Heathrow
British Airways Logo
13:30 - 12:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 25m1 stop London Heathrow
£717British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
20:00 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
28h 50m1 stop London Heathrow
British Airways Logo
18:45 - 17:25SEA  Seattle/Tacoma Intl-BHD Belfast City
14h 40m1 stop London Heathrow
£717British Airways
Thu, 5 Nov - Mon, 9 Nov
British Airways Logo
12:45 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
30h 50m1 stop London Heathrow
British Airways Logo
13:30 - 12:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 25m1 stop London Heathrow
£719British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
10:31 - 15:30SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 59m2 stops Chicago O'Hare Intl London Heathrow
£721British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
12:45 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
30h 50m1 stop London Heathrow
British Airways Logo
13:30 - 12:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 25m1 stop London Heathrow
£722British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
10:31 - 15:30SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 59m2 stops Chicago O'Hare Intl London Heathrow
£723British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
06:30 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 20m1 stop London Heathrow
British Airways Logo
18:45 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
14h 05m1 stop London Heathrow
£724British Airways
Thu, 14 Jan - Sun, 17 Jan
British Airways Logo
11:05 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
British Airways Logo
10:31 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 19m2 stops Chicago O'Hare Intl London Heathrow
£725British Airways
Thu, 14 Jan - Sun, 17 Jan
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
10:31 - 15:30SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 59m2 stops Chicago O'Hare Intl London Heathrow
£726British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
07:40 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
20h 35m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
06:12 - 10:45SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 33m2 stops Chicago O'Hare Intl London Heathrow
£728British Airways
Thu, 14 Jan - Sun, 17 Jan

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British Airways flights from Northern Ireland to Seattle

Our best British Airways deals on Northern Ireland to Seattle flight tickets
British Airways
15 Oct
BHD12:45Belfast City
30h 50m
1 stop
SEA11:35Seattle/Tacoma Intl
19 Oct
SEA13:30Seattle/Tacoma Intl
15h 25m
1 stop
BHD12:55Belfast City
£717
British Airways
5 Nov
BHD20:00Belfast City
28h 50m
1 stop
SEA16:50Seattle/Tacoma Intl
9 Nov
SEA18:45Seattle/Tacoma Intl
14h 40m
1 stop
BHD17:25Belfast City
£717
British Airways
15 Oct
BHD12:45Belfast City
30h 50m
1 stop
SEA11:35Seattle/Tacoma Intl
19 Oct
SEA13:30Seattle/Tacoma Intl
15h 25m
1 stop
BHD12:55Belfast City
£719

momondo Fare Finder

 
Use the filters below to find and compare flights from Northern Ireland to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

12:45-11:35

1 stop30h 50m

Seattle/Tacoma Intl

Mon 19/10

13:30-12:55

1 stop15h 25m

£717

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 5/11

20:00-16:50

1 stop28h 50m

Seattle/Tacoma Intl

Mon 9/11

18:45-17:25

1 stop14h 40m

£717

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

12:45-11:35

1 stop30h 50m

Seattle/Tacoma Intl

Mon 19/10

13:30-12:55

1 stop15h 25m

£719

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

10:31-15:30

2 stops20h 59m

£721

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

12:45-11:35

1 stop30h 50m

Seattle/Tacoma Intl

Mon 19/10

13:30-12:55

1 stop15h 25m

£722

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

10:31-15:30

2 stops20h 59m

£722
Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 14/1

06:30-16:50

1 stop18h 20m

Seattle/Tacoma Intl

Sun 17/1

18:45-16:50

1 stop14h 05m

£724

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 14/1

11:05-16:50

1 stop13h 45m

Seattle/Tacoma Intl

Sun 17/1

10:31-16:50

2 stops22h 19m

£725

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

10:31-15:30

2 stops20h 59m

£726

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 14/1

07:40-20:15

2 stops20h 35m

Seattle/Tacoma Intl

Sun 17/1

06:12-10:45

2 stops20h 33m

£728

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
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See travel insights to Seattle from

How to get the cheapest flight ticket from Northern Ireland to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Northern Ireland to Seattle/Tacoma Intl?

Aer Lingus and British Airways are the most popular carriers operating from Northern Ireland to Seattle/Tacoma Intl

Cheap Northern Ireland to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Seattle

Best price found

£363

Fastest flight time

13h 45m

Direct flights

None
The best one-way flight to Seattle from Northern Ireland in the past 72 hours is £363. The best return flight deal from Northern Ireland to Seattle found on momondo in the last 72 hours is £717.
The fastest flight from Northern Ireland to Seattle takes 13h 45m
There are no direct flights from Northern Ireland to Seattle. There are no popular flight routes from Northern Ireland to Seattle.
Search flight deals

Frequently asked questions about flying from Northern Ireland to Seattle

  • When did momondo last update prices for flights from Northern Ireland to Seattle/Tacoma Intl Airport?

    Prices for flights from Northern Ireland to Seattle/Tacoma Intl Airport refresh daily.

  • How old do you have to be to fly from Northern Ireland to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Westport
Kirkland
Ashford
Tacoma
SeaTac
Tukwila
Fife

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Northern Ireland to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Northern Ireland to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Northern Ireland to Seattle?

momondo helps you find the best flight between Northern Ireland and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Northern Ireland to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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