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.

$644 Cheap Flights from Belfast City Airport to Seattle in 2026

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Belfast City Airport to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

11:34 am - 12:00 pm

SEA

BHD

16h 26m

2 stops

$770British Airways

Wed, Sep 16 - Wed, Oct 7

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

1:30 pm - 10:45 am

SEA

BHD

13h 15m

1 stop

$773British Airways

Tue, Sep 15 - Tue, Oct 6

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

12:00 pm - 3:20 pm

SEA

BHD

19h 20m

2 stops

$784British Airways

Tue, Sep 15 - Tue, Oct 6

10:05 am - 9:36 pm

BHD

SEA

19h 31m

2 stops

11:34 am - 12:00 pm

SEA

BHD

16h 26m

2 stops

$883British Airways

Wed, Sep 16 - Wed, Oct 7

9:15 am - 4:55 pm

BHD

SEA

15h 40m

1 stop

2:46 pm - 4:40 pm

SEA

BHD

17h 54m

2 stops

$886British Airways

Mon, Nov 2 - Thu, Nov 12

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

8:20 pm - 6:55 pm

SEA

BHD

14h 35m

1 stop

$898British Airways

Fri, Sep 4 - Tue, Sep 8

8:10 pm - 8:52 pm

BHD

SEA

32h 42m

2 stops

8:20 pm - 7:40 pm

SEA

BHD

15h 20m

1 stop

$903British Airways

Fri, Sep 4 - Tue, Sep 8

11:35 am - 11:35 am

BHD

SEA

32h 00m

1 stop

1:30 pm - 2:35 pm

SEA

BHD

17h 05m

1 stop

$908British Airways

Wed, Sep 2 - Sun, Sep 6

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

8:20 pm - 6:55 pm

SEA

BHD

14h 35m

1 stop

$917British Airways

Tue, Sep 1 - Tue, Sep 22

9:40 am - 8:52 pm

BHD

SEA

19h 12m

2 stops

8:20 pm - 7:40 pm

SEA

BHD

15h 20m

1 stop

$923British Airways

Tue, Sep 1 - Tue, Sep 22

British Airways flights from Belfast City Airport to Seattle

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

British Airways

Sep 16

BHD6:30 amBelfast City

13h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Oct 7

SEA11:34 amSeattle/Tacoma Intl

16h 26m

2 stops

BHD12:00 pmBelfast City

$770

British Airways

Sep 15

BHD6:30 amBelfast City

13h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Oct 6

SEA1:30 pmSeattle/Tacoma Intl

13h 15m

1 stop

BHD10:45 amBelfast City

$773

British Airways

Sep 15

BHD6:30 amBelfast City

13h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Oct 6

SEA12:00 pmSeattle/Tacoma Intl

19h 20m

2 stops

BHD3:20 pmBelfast City

$784

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

Cheapest round-trip

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 9/16

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Wed 10/7

11:34 am-12:00 pm

2 stops16h 26m

$770

Quickest round-trip

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 9/15

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Tue 10/6

1:30 pm-10:45 am

1 stop13h 15m

$773

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 9/15

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Tue 10/6

12:00 pm-3:20 pm

2 stops19h 20m

$784

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 9/16

10:05 am-9:36 pm

2 stops19h 31m

Seattle/Tacoma Intl

Wed 10/7

11:34 am-12:00 pm

2 stops16h 26m

$883

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 11/2

9:15 am-4:55 pm

1 stop15h 40m

Seattle/Tacoma Intl

Thu 11/12

2:46 pm-4:40 pm

2 stops17h 54m

$886

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/4

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Tue 9/8

8:20 pm-6:55 pm

1 stop14h 35m

$898

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/4

8:10 pm-8:52 pm

2 stops32h 42m

Seattle/Tacoma Intl

Tue 9/8

8:20 pm-7:40 pm

1 stop15h 20m

$903

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 9/2

11:35 am-11:35 am

1 stop32h 00m

Seattle/Tacoma Intl

Sun 9/6

1:30 pm-2:35 pm

1 stop17h 05m

$908

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 9/1

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Tue 9/22

8:20 pm-6:55 pm

1 stop14h 35m

$917

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 9/1

9:40 am-8:52 pm

2 stops19h 12m

Seattle/Tacoma Intl

Tue 9/22

8:20 pm-7:40 pm

1 stop15h 20m

$923

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

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

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

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	13h 05m
Direct flights	None

The fastest flight from Belfast City Airport to Seattle takes 13h 05m

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

Frequently asked questions about flying from Belfast City Airport to Seattle

How far is Belfast City to Seattle/Tacoma Intl by plane?
There are 4463.4 mi between Belfast City and Seattle/Tacoma Intl. 13h 05m 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

Redmond

Kent

Lakewood

Tukwila

Puyallup

Marysville

Cle Elum

Federal Way

Fife

Centralia

Shoreline

Westport

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.