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

Prices for flights from Seattle/Tacoma Intl Airport to Northern Ireland were last updated today.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The travel and health documents required for your trip to Northern Ireland 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 Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£299 Cheap Flights from Seattle to Northern Ireland in 2026

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from Seattle to Northern Ireland

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

20:20 - 20:35

SEA

BHD

16h 15m

1 stop

20:35 - 11:35

BHD

SEA

23h 00m

1 stop

£668British Airways

lun., 5 oct. - jeu., 22 oct.

20:20 - 18:45

SEA

BHD

14h 25m

1 stop

20:10 - 11:35

BHD

SEA

23h 25m

1 stop

£682British Airways

dim., 4 oct. - dim., 18 oct.

19:00 - 23:20

SEA

BFS

20h 20m

3 stops

07:00 - 09:40

BFS

SEA

34h 40m

3 stops

£683Multiple Airlines

mar., 18 août - mar., 25 août

15:20 - 15:30

SEA

BHD

16h 10m

2 stops

06:30 - 11:35

BHD

SEA

13h 05m

1 stop

£684American Airlines

lun., 5 oct. - jeu., 22 oct.

06:15 - 10:30

SEA

BHD

20h 15m

2 stops

20:10 - 11:35

BHD

SEA

23h 25m

1 stop

£685British Airways

dim., 4 oct. - dim., 18 oct.

21:45 - 12:15

SEA

BFS

30h 30m

1 stop

19:35 - 17:10

BFS

SEA

29h 35m

2 stops

£686Multiple Airlines

dim., 4 oct. - dim., 18 oct.

08:11 - 10:15

SEA

BHD

18h 04m

2 stops

12:10 - 16:55

BHD

SEA

12h 45m

1 stop

£686British Airways

mer., 11 nov. - dim., 15 nov.

10:31 - 12:55

SEA

BHD

18h 24m

2 stops

12:45 - 00:35

BHD

SEA

19h 50m

2 stops

£693British Airways

lun., 5 oct. - jeu., 22 oct.

21:45 - 12:15

SEA

BFS

30h 30m

1 stop

19:35 - 18:55

BFS

SEA

31h 20m

1 stop

£723Multiple Airlines

dim., 4 oct. - dim., 18 oct.

06:15 - 10:30

SEA

BHD

20h 15m

2 stops

19:10 - 20:15

BHD

SEA

33h 05m

2 stops

£738British Airways

dim., 4 oct. - dim., 18 oct.

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KLM flights from Seattle to Northern Ireland

Our best KLM deals on Seattle to Northern Ireland flight tickets

KLM

25 Jul

SEA17:40Seattle/Tacoma Intl

31h 40m

1 stop

BHD09:20Belfast City

1 Aug

BHD17:30Belfast City

26h 07m

1 stop

SEA11:37Seattle/Tacoma Intl

£894

KLM

15 Jul

SEA09:05Seattle/Tacoma Intl

16h 15m

2 stops

BHD09:20Belfast City

18 Jul

BHD09:50Belfast City

17h 12m

2 stops

SEA19:02Seattle/Tacoma Intl

£6,357

KLM

15 Jul

SEA09:05Seattle/Tacoma Intl

16h 15m

2 stops

BHD09:20Belfast City

18 Jul

BHD09:50Belfast City

17h 12m

2 stops

SEA19:02Seattle/Tacoma Intl

£6,357

Delta flights from Seattle to Northern Ireland

Our best Delta deals on Seattle to Northern Ireland flight tickets

Delta

25 Jul

SEA07:20Seattle/Tacoma Intl

18h 00m

2 stops

BHD09:20Belfast City

1 Aug

BHD09:50Belfast City

14h 37m

1 stop

SEA16:27Seattle/Tacoma Intl

£1,027

Delta

15 Jul

SEA14:30Seattle/Tacoma Intl

18h 25m

2 stops

BHD16:55Belfast City

18 Jul

BHD09:50Belfast City

14h 30m

1 stop

SEA16:20Seattle/Tacoma Intl

£6,356

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lun. 5/10

20:20-20:35

1 stop16h 15m

Belfast City

jeu. 22/10

20:35-11:35

1 stop23h 00m

£668

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

dim. 4/10

20:20-18:45

1 stop14h 25m

Belfast City

dim. 18/10

20:10-11:35

1 stop23h 25m

£682

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

mar. 18/8

19:00-23:20

3 stops20h 20m

Belfast Intl

mar. 25/8

07:00-09:40

3 stops34h 40m

£683

Fastest return journey

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lun. 5/10

15:20-15:30

2 stops16h 10m

Belfast City

jeu. 22/10

06:30-11:35

1 stop13h 05m

£684

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

dim. 4/10

06:15-10:30

2 stops20h 15m

Belfast City

dim. 18/10

20:10-11:35

1 stop23h 25m

£685

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

dim. 4/10

21:45-12:15

1 stop30h 30m

Belfast Intl

dim. 18/10

19:35-17:10

2 stops29h 35m

£686

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mer. 11/11

08:11-10:15

2 stops18h 04m

Belfast City

dim. 15/11

12:10-16:55

1 stop12h 45m

£686

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lun. 5/10

10:31-12:55

2 stops18h 24m

Belfast City

jeu. 22/10

12:45-00:35

2 stops19h 50m

£693

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

dim. 4/10

21:45-12:15

1 stop30h 30m

Belfast Intl

dim. 18/10

19:35-18:55

1 stop31h 20m

£723

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

dim. 4/10

06:15-10:30

2 stops20h 15m

Belfast City

dim. 18/10

19:10-20:15

2 stops33h 05m

£738

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

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 Seattle/Tacoma Intl to Northern Ireland?

Delta and KLM are the most popular carriers operating from Seattle/Tacoma Intl to Northern Ireland

Cheap Seattle to Northern Ireland flight deals and tips

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

Fastest flight time	13h 50m
Direct flights	None

The fastest flight from Seattle to Northern Ireland takes 13h 50m

There are no direct flights from Seattle to Northern Ireland. There are no popular flight routes from Seattle to Northern Ireland.

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Frequently asked questions about flying from Seattle to Northern Ireland

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Northern Ireland?
Prices for flights from Seattle/Tacoma Intl Airport to Northern Ireland were last updated today.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Northern Ireland?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents required for your trip to Northern Ireland 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 Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

It is quick and easy to find Seattle to Northern Ireland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Northern Ireland that suits you.

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

Yes. All flights to Northern Ireland from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Seattle to Northern Ireland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Seattle to Northern Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.