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.

$535 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

Last minute

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

1:24 pm - 3:30 pm

SEA

BHD

18h 06m

2 stops

$5,262British Airways

Mon, Aug 31 - Thu, Sep 10

9:40 am - 8:17 pm

BHD

SEA

18h 37m

2 stops

1:24 pm - 3:30 pm

SEA

BHD

18h 06m

2 stops

$5,268British Airways

Mon, Aug 31 - Thu, Sep 10

11:35 am - 6:25 pm

BHD

SEA

14h 50m

1 stop

8:20 pm - 6:45 pm

SEA

BHD

14h 25m

1 stop

$5,517British Airways

Mon, Aug 31 - Thu, Sep 10

British Airways flights from Belfast City Airport to Seattle

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

British Airways

Aug 31

BHD6:30 amBelfast City

13h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Sep 10

SEA1:24 pmSeattle/Tacoma Intl

18h 06m

2 stops

BHD3:30 pmBelfast City

$5,262

British Airways

Aug 31

BHD9:40 amBelfast City

18h 37m

2 stops

SEA8:17 pmSeattle/Tacoma Intl

Sep 10

SEA1:24 pmSeattle/Tacoma Intl

18h 06m

2 stops

BHD3:30 pmBelfast City

$5,268

British Airways

Aug 31

BHD11:35 amBelfast City

14h 50m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

Sep 10

SEA8:20 pmSeattle/Tacoma Intl

14h 25m

1 stop

BHD6:45 pmBelfast City

$5,517

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

Mon 8/31

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Thu 9/10

1:24 pm-3:30 pm

2 stops18h 06m

$5,262

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

9:40 am-8:17 pm

2 stops18h 37m

Seattle/Tacoma Intl

Thu 9/10

1:24 pm-3:30 pm

2 stops18h 06m

$5,268

Quickest round-trip

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

11:35 am-6:25 pm

1 stop14h 50m

Seattle/Tacoma Intl

Thu 9/10

8:20 pm-6:45 pm

1 stop14h 25m

$5,517

Cheapest one-way

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 6/9

10:20 am-2:18 pm

3 stops35h 58m

$535

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 6/7

3:25 pm-4:00 pm

3 stops56h 35m

$545

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 6/9

10:20 am-11:45 am

2 stops33h 25m

$628

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 6/7

3:25 pm-10:40 am

2 stops51h 15m

$629

Quickest one-way

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 6/9

6:30 am-11:35 am

1 stop13h 05m

$735

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 6/7

7:10 pm-11:35 am

1 stop24h 25m

$775

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/3

9:40 am-11:35 am

1 stop33h 55m

$1,095

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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	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

Marysville

Puyallup

Lakewood

Cle Elum

Tukwila

Federal Way

Centralia

Fife

Westport

Tumwater

Shoreline

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.