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

Prices for flights from Seattle/Tacoma Intl Airport to Belfast are refreshed on a daily basis.

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

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 Belfast.

What documentation or ID do you need to fly to Belfast?

The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£501 Cheap Flights from Seattle to Belfast in 2025/26

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Find the cheapest flights from Seattle to Belfast

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18:50 - 07:30SEA-BHD

28h 40m1 stop

17:35 - 16:55BHD-SEA

31h 20m1 stop

£501British Airways

Find Deal

ons, 3 dec - sön, 7 dec

18:50 - 07:30SEA-BHD

28h 40m1 stop

17:35 - 16:55BHD-SEA

31h 20m1 stop

£502British Airways

Find Deal

ons, 3 dec - sön, 7 dec

11:30 - 21:00SEA-BHD

25h 30m2 stops

17:20 - 11:50BHD-SEA

26h 30m1 stop

£512Virgin Atlantic

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ons, 3 dec - sön, 7 dec

21:59 - 16:50SEA-BHD

34h 51m2 stops

06:30 - 11:50BHD-SEA

13h 20m1 stop

£513Delta

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ons, 3 dec - sön, 7 dec

11:30 - 21:00SEA-BHD

25h 30m2 stops

17:20 - 20:00BHD-SEA

34h 40m2 stops

£520Virgin Atlantic

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ons, 3 dec - sön, 7 dec

07:20 - 21:00SEA-BHD

29h 40m2 stops

06:30 - 22:22BHD-SEA

23h 52m2 stops

£520Delta

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ons, 3 dec - sön, 7 dec

14:35 - 22:20SEA-BFS

23h 45m2 stops

06:30 - 17:00BFS-SEA

18h 30m2 stops

£539Multiple Airlines

Find Deal

tors, 20 nov - tors, 27 nov

18:50 - 16:45SEA-BHD

13h 55m1 stop

09:15 - 17:55BHD-SEA

15h 40m1 stop

£567British Airways

Find Deal

lör, 7 mar - ons, 18 mar

14:35 - 19:35SEA-BHD

21h 00m2 stops

07:25 - 17:00BHD-SEA

17h 35m2 stops

£581Multiple Airlines

Find Deal

tors, 20 nov - tors, 27 nov

15:00 - 16:50SEA-BHD

17h 50m1 stop

06:30 - 15:54BHD-SEA

17h 24m2 stops

£666KLM

Find Deal

tors, 20 nov - tors, 27 nov

Delta flights from Seattle to Belfast

Our best Delta deals on Seattle to Belfast flight tickets

Delta

3 Dec

SEA21:59Seattle/Tacoma Intl

34h 51m

2 stops

BHD16:50Belfast City

7 Dec

BHD06:30Belfast City

13h 20m

1 stop

SEA11:50Seattle/Tacoma Intl

£513

Find similar

Delta

3 Dec

SEA07:20Seattle/Tacoma Intl

29h 40m

2 stops

BHD21:00Belfast City

7 Dec

BHD06:30Belfast City

23h 52m

2 stops

SEA22:22Seattle/Tacoma Intl

£520

Find similar

Delta

20 Nov

SEA15:00Seattle/Tacoma Intl

17h 50m

1 stop

BHD16:50Belfast City

27 Nov

BHD06:30Belfast City

13h 15m

1 stop

SEA11:45Seattle/Tacoma Intl

£631

Find similar

British Airways flights from Seattle to Belfast

Our best British Airways deals on Seattle to Belfast flight tickets

British Airways

3 Dec

SEA18:50Seattle/Tacoma Intl

28h 40m

1 stop

BHD07:30Belfast City

7 Dec

BHD17:35Belfast City

31h 20m

1 stop

SEA16:55Seattle/Tacoma Intl

£501

Find similar

British Airways

3 Dec

SEA18:50Seattle/Tacoma Intl

28h 40m

1 stop

BHD07:30Belfast City

7 Dec

BHD17:35Belfast City

31h 20m

1 stop

SEA16:55Seattle/Tacoma Intl

£502

Find similar

British Airways

7 Mar

SEA18:50Seattle/Tacoma Intl

13h 55m

1 stop

BHD16:45Belfast City

18 Mar

BHD09:15Belfast City

15h 40m

1 stop

SEA17:55Seattle/Tacoma Intl

£567

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

18:50-07:30

1 stop28h 40m

Belfast City

sön 7/12

17:35-16:55

1 stop31h 20m

£501

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

18:50-07:30

1 stop28h 40m

Belfast City

sön 7/12

17:35-16:55

1 stop31h 20m

£502

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

11:30-21:00

2 stops25h 30m

Belfast City

sön 7/12

17:20-11:50

1 stop26h 30m

£512

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

21:59-16:50

2 stops34h 51m

Belfast City

sön 7/12

06:30-11:50

1 stop13h 20m

£513

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

11:30-21:00

2 stops25h 30m

Belfast City

sön 7/12

17:20-20:00

2 stops34h 40m

£520

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ons 3/12

07:20-21:00

2 stops29h 40m

Belfast City

sön 7/12

06:30-22:22

2 stops23h 52m

£520

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

tors 20/11

14:35-22:20

2 stops23h 45m

Belfast Intl

tors 27/11

06:30-17:00

2 stops18h 30m

£539

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lör 7/3

18:50-16:45

1 stop13h 55m

Belfast City

ons 18/3

09:15-17:55

1 stop15h 40m

£567

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

tors 20/11

14:35-19:35

2 stops21h 00m

Belfast City

tors 27/11

07:25-17:00

2 stops17h 35m

£581

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

tors 20/11

15:00-16:50

1 stop17h 50m

Belfast City

tors 27/11

06:30-15:54

2 stops17h 24m

£666

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Belfast

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 Belfast?

Aer Lingus and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Belfast

Cheap Seattle to Belfast flight deals and tips

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

Direct flights	None

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

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How far is Seattle/Tacoma Intl to Belfast by plane?
Seattle/Tacoma Intl and Belfast are 4463.0 mi apart from one another. 12h 55m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Belfast?
Prices for flights from Seattle/Tacoma Intl Airport to Belfast are refreshed on a daily basis.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Belfast?
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 Belfast.
What documentation or ID do you need to fly to Belfast?
The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Belfast from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Flights from Seattle to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Seattle and alert you when they change.