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Cheap flights from Northern Ireland to Seattle from £398

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.
Iberia Logo
14:10 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
34h 40m1 stop London Heathrow
Iberia Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£760Iberia
Thu, 21 Jan - Sun, 24 Jan
Iberia Logo
14:10 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
34h 40m1 stop London Heathrow
Iberia Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£761Iberia
Thu, 21 Jan - Sun, 24 Jan
Iberia Logo
17:50 - 00:43BHD  Belfast City-SEA Seattle/Tacoma Intl
38h 53m2 stops London Heathrow Chicago O'Hare Intl
Iberia Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£763Iberia
Thu, 21 Jan - Sun, 24 Jan
Iberia Logo
17:50 - 00:43BHD  Belfast City-SEA Seattle/Tacoma Intl
38h 53m2 stops London Heathrow Chicago O'Hare Intl
Iberia Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£766Iberia
Thu, 21 Jan - Sun, 24 Jan
British Airways Logo
19:40 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 55m1 stop London Heathrow
British Airways Logo
13:35 - 10:30SEA  Seattle/Tacoma Intl-BHD Belfast City
12h 55m1 stop London Heathrow
£766British Airways
Wed, 5 May - Sun, 9 May
Iberia Logo
06:30 - 22:38BHD  Belfast City-SEA Seattle/Tacoma Intl
24h 08m2 stops London Heathrow Chicago O'Hare Intl
Iberia Logo
10:27 - 14:35SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 08m2 stops Chicago O'Hare Intl London Heathrow
£767Iberia
Wed, 5 May - Sun, 9 May
British Airways Logo
20:35 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 00m1 stop London Heathrow
British Airways Logo
17:40 - 20:35SEA  Seattle/Tacoma Intl-BHD Belfast City
18h 55m2 stops Helsinki-Vantaa London Heathrow
£768British Airways
Wed, 5 May - Sun, 9 May
British Airways Logo
19:40 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 55m1 stop London Heathrow
British Airways Logo
13:35 - 10:30SEA  Seattle/Tacoma Intl-BHD Belfast City
12h 55m1 stop London Heathrow
£769British Airways
Wed, 5 May - Sun, 9 May
Iberia Logo
17:50 - 00:43BHD  Belfast City-SEA Seattle/Tacoma Intl
38h 53m2 stops London Heathrow Chicago O'Hare Intl
Iberia Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£770Iberia
Thu, 21 Jan - Sun, 24 Jan
British Airways Logo
20:35 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 00m1 stop London Heathrow
British Airways Logo
17:40 - 20:35SEA  Seattle/Tacoma Intl-BHD Belfast City
18h 55m2 stops Helsinki-Vantaa London Heathrow
£772British Airways
Wed, 5 May - Sun, 9 May

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Iberia flights from Northern Ireland to Seattle

Our best Iberia deals on Northern Ireland to Seattle flight tickets
Iberia
21 Jan
BHD14:10Belfast City
34h 40m
1 stop
SEA16:50Seattle/Tacoma Intl
24 Jan
SEA10:17Seattle/Tacoma Intl
22h 33m
2 stops
BHD16:50Belfast City
£760
Iberia
21 Jan
BHD14:10Belfast City
34h 40m
1 stop
SEA16:50Seattle/Tacoma Intl
24 Jan
SEA18:45Seattle/Tacoma Intl
14h 05m
1 stop
BHD16:50Belfast City
£761
Iberia
21 Jan
BHD14:10Belfast City
34h 40m
1 stop
SEA16:50Seattle/Tacoma Intl
24 Jan
SEA06:00Seattle/Tacoma Intl
26h 50m
2 stops
BHD16:50Belfast City
£763

British Airways flights from Northern Ireland to Seattle

Our best British Airways deals on Northern Ireland to Seattle flight tickets
British Airways
5 May
BHD20:35Belfast City
23h 00m
1 stop
SEA11:35Seattle/Tacoma Intl
9 May
SEA17:40Seattle/Tacoma Intl
18h 55m
2 stops
BHD20:35Belfast City
£768
British Airways
5 May
BHD20:35Belfast City
23h 00m
1 stop
SEA11:35Seattle/Tacoma Intl
9 May
SEA17:40Seattle/Tacoma Intl
18h 55m
2 stops
BHD20:35Belfast City
£769
British Airways
5 May
BHD19:40Belfast City
23h 55m
1 stop
SEA11:35Seattle/Tacoma Intl
9 May
SEA13:35Seattle/Tacoma Intl
12h 55m
1 stop
BHD10:30Belfast City
£769

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 21/1

14:10-16:50

1 stop34h 40m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£760

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

14:10-16:50

1 stop34h 40m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£761

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

17:50-00:43

2 stops38h 53m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£763

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

17:50-00:43

2 stops38h 53m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£766
Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

19:40-11:35

1 stop23h 55m

Seattle/Tacoma Intl

Sun 9/5

13:35-10:30

1 stop12h 55m

£766

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

06:30-22:38

2 stops24h 08m

Seattle/Tacoma Intl

Sun 9/5

10:27-14:35

2 stops20h 08m

£767

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

20:35-11:35

1 stop23h 00m

Seattle/Tacoma Intl

Sun 9/5

17:40-20:35

2 stops18h 55m

£768

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

19:40-11:35

1 stop23h 55m

Seattle/Tacoma Intl

Sun 9/5

13:35-10:30

1 stop12h 55m

£769

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

17:50-00:43

2 stops38h 53m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£770

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

20:35-11:35

1 stop23h 00m

Seattle/Tacoma Intl

Sun 9/5

17:40-20:35

2 stops18h 55m

£772

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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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?

British Airways is the most popular carrier 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

£398

Fastest flight time

12h 55m

Direct flights

None
The best one-way flight to Seattle from Northern Ireland in the past 72 hours is £398. The best return flight deal from Northern Ireland to Seattle found on momondo in the last 72 hours is £760.
The fastest flight from Northern Ireland to Seattle takes 12h 55m
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
Redmond
Kirkland
Leavenworth
Fife
SeaTac
Ashford
Tacoma
Kent
Tukwila

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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