What is the cheapest airline that flies from Belfast City to Seattle/Tacoma Intl?

British Airways is the most popular carrier operating from Belfast City to Seattle/Tacoma Intl

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

Prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport refresh daily.

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

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

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$590 Cheap Flights from Belfast City Airport to Seattle in 2026

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Find the cheapest flights from Belfast City Airport to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:50 am - 4:30 pm

BHD

SEA

14h 40m

1 stop

5:40 pm - 4:55 pm

SEA

BHD

15h 15m

1 stop

$927KLM

Wed, May 20 - Thu, May 28

11:35 am - 12:36 am

BHD

SEA

21h 01m

2 stops

8:20 pm - 7:25 pm

SEA

BHD

15h 05m

1 stop

$934Multiple Airlines

Wed, May 20 - Thu, May 28

6:35 am - 11:30 am

BHD

SEA

12h 55m

1 stop

7:50 pm - 6:35 pm

SEA

BHD

15h 45m

1 stop

$937British Airways

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:04 pm

BHD

SEA

24h 29m

2 stops

7:21 am - 2:15 pm

SEA

BHD

23h 54m

2 stops

$943British Airways

Sat, Mar 7 - Mon, Mar 9

9:50 am - 10:40 pm

BHD

SEA

20h 50m

2 stops

10:35 am - 9:20 am

SEA

BHD

14h 45m

2 stops

$956Delta

Wed, May 20 - Thu, May 28

6:30 am - 12:35 pm

BHD

SEA

13h 05m

1 stop

5:35 pm - 9:20 am

SEA

BHD

31h 45m

1 stop

$1,048Multiple Airlines

Sun, Mar 22 - Sun, Mar 29

6:30 am - 12:35 pm

BHD

SEA

13h 05m

1 stop

7:59 pm - 9:20 am

SEA

BHD

29h 21m

2 stops

$1,052Multiple Airlines

Sun, Mar 22 - Sun, Mar 29

6:30 am - 6:40 pm

BHD

SEA

19h 10m

2 stops

8:25 am - 9:20 am

SEA

BHD

16h 55m

2 stops

$1,082KLM

Sun, Mar 22 - Sun, Mar 29

6:50 pm - 7:20 pm

BHD

SEA

31h 30m

2 stops

1:37 pm - 5:40 pm

SEA

BHD

20h 03m

2 stops

$1,091Multiple Airlines

Sun, Mar 22 - Sun, Mar 29

6:35 am - 11:30 am

BHD

SEA

12h 55m

1 stop

7:50 pm - 6:35 pm

SEA

BHD

15h 45m

1 stop

$1,120British Airways

Sat, Mar 7 - Mon, Mar 9

British Airways flights from Belfast City Airport to Seattle

Our best British Airways deals on Belfast City Airport to Seattle flight tickets

British Airways

Mar 7

BHD6:35 amBelfast City

12h 55m

1 stop

SEA11:30 amSeattle/Tacoma Intl

Mar 9

SEA7:50 pmSeattle/Tacoma Intl

15h 45m

1 stop

BHD6:35 pmBelfast City

$937

British Airways

Mar 7

BHD6:35 amBelfast City

24h 29m

2 stops

SEA11:04 pmSeattle/Tacoma Intl

Mar 9

SEA7:21 amSeattle/Tacoma Intl

23h 54m

2 stops

BHD2:15 pmBelfast City

$943

British Airways

Mar 7

BHD6:35 amBelfast City

12h 55m

1 stop

SEA11:30 amSeattle/Tacoma Intl

Mar 9

SEA7:50 pmSeattle/Tacoma Intl

15h 45m

1 stop

BHD6:35 pmBelfast City

$1,120

KLM flights from Belfast City Airport to Seattle

Our best KLM deals on Belfast City Airport to Seattle flight tickets

KLM

May 20

BHD9:50 amBelfast City

14h 40m

1 stop

SEA4:30 pmSeattle/Tacoma Intl

May 28

SEA5:40 pmSeattle/Tacoma Intl

15h 15m

1 stop

BHD4:55 pmBelfast City

$927

KLM

Mar 22

BHD6:30 amBelfast City

19h 10m

2 stops

SEA6:40 pmSeattle/Tacoma Intl

Mar 29

SEA8:25 amSeattle/Tacoma Intl

16h 55m

2 stops

BHD9:20 amBelfast City

$1,082

momondo Fare Finder

Use the filters below to find and compare flights from Belfast City Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 5/20

9:50 am-4:30 pm

1 stop14h 40m

Seattle/Tacoma Intl

Thu 5/28

5:40 pm-4:55 pm

1 stop15h 15m

$927

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 5/20

11:35 am-12:36 am

2 stops21h 01m

Seattle/Tacoma Intl

Thu 5/28

8:20 pm-7:25 pm

1 stop15h 05m

$934

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 3/7

6:35 am-11:30 am

1 stop12h 55m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-6:35 pm

1 stop15h 45m

$937

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 3/7

6:35 am-11:04 pm

2 stops24h 29m

Seattle/Tacoma Intl

Mon 3/9

7:21 am-2:15 pm

2 stops23h 54m

$943

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 5/20

9:50 am-10:40 pm

2 stops20h 50m

Seattle/Tacoma Intl

Thu 5/28

10:35 am-9:20 am

2 stops14h 45m

$956

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 3/22

6:30 am-12:35 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 3/29

5:35 pm-9:20 am

1 stop31h 45m

$1,048

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 3/22

6:30 am-12:35 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 3/29

7:59 pm-9:20 am

2 stops29h 21m

$1,052

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 3/22

6:30 am-6:40 pm

2 stops19h 10m

Seattle/Tacoma Intl

Sun 3/29

8:25 am-9:20 am

2 stops16h 55m

$1,082

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 3/22

6:50 pm-7:20 pm

2 stops31h 30m

Seattle/Tacoma Intl

Sun 3/29

1:37 pm-5:40 pm

2 stops20h 03m

$1,091

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 3/7

6:35 am-11:30 am

1 stop12h 55m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-6:35 pm

1 stop15h 45m

$1,120

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Belfast City Airport 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

Prices

Airlines

Can stopping save me money on Belfast City Airport to Seattle flights?

You could potentially save up to 16% on your flight if you consider stops on a Belfast City Airport to Seattle flight.

When to book flights from Belfast City Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast City Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Belfast City Airport to Seattle (BHD to SEA) flight deals and tips

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

Fastest flight time	12h 55m
Direct flights	None

The fastest flight from Belfast City Airport to Seattle takes 12h 55m

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

Search flight deals

How far is Belfast City to Seattle/Tacoma Intl by plane?
There are 4463.4 mi between Belfast City and Seattle/Tacoma Intl. 12h 55m is a normal flight duration for this route.
When did momondo last update prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from Belfast City Airport 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 Belfast City Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Redmond

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Kirkland

Centralia

Tumwater

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Belfast.

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

Yes. momondo enables you to select and highlight flights to Seattle from Belfast with this policy.

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

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

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

If you are not ready to book a flight from Belfast to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.