How long is the flight from Seattle to Belfast City Airport?

Departing from Seattle to Belfast City Airport will take you 14h 05m. The distance between Seattle and Belfast City Airport is about 4472 mi.

In terms of precipitation, rainfall in Belfast City Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast City Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast City Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from SEA to BHD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Belfast City Airport as you normally would.

What airport do you fly from for flights from Seattle to Belfast City?

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Belfast City. You should not have trouble finding flights to Belfast City from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Belfast City per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Seattle airport to Belfast City. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

Can I find deals for flights from Seattle to Belfast City that include hotel bookings?

Yes. In addition to deals on Seattle to Belfast City flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Seattle to Belfast City?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Belfast City.

Can I find deals for business class flights from Seattle to Belfast City?

Yes. Cheapflights offers flight deals from Seattle to Belfast City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£240+ Cheap Flights from Seattle to Belfast City Airport

Cheap flight deals from Seattle to Belfast City

Enter your travel dates to find the best prices.

Cheapest

Best

One-way

Cheapest flights from Seattle to Belfast City
Explore the most affordable flight options available from Seattle to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Mon 5/1020:20 -

1 stop15h 05m

Thu 22/1012:45 -

1 stop13h 40m

Deal found 23/8£703

Mon 5/1015:14 -

2 stops16h 16m

Thu 22/1014:20 -

1 stop29h 15m

Deal found 23/8£715

Sat 19/1213:40 -

1 stop13h 30m

Mon 4/119:40 -

1 stop23h 45m

Deal found 25/8£1,126

Sat 19/1213:40 -

1 stop13h 30m

Sun 3/115:15 -

1 stop33h 35m

Deal found 25/8£1,199

Fri 18/1218:45 -

1 stop16h 25m

Thu 31/1206:30 -

1 stop12h 55m

Deal found 25/8£1,204

Fri 18/1218:45 -

1 stop16h 25m

Sun 3/120:30 -

1 stop28h 20m

Deal found 25/8£1,277

Sat 19/1218:55 -

1 stop16h 15m

Thu 31/1207:15 -

2 stops17h 45m

Deal found 25/8£1,288

Find flight deals from Seattle to Belfast City

Round-trip from	£676
One-way from	£240

British Airways
17/1-21/1
2 total stops
27h 50m total
Seattle to Belfast

Search Deals

British Airways
26/1
1 total stop
14h 00m total
Seattle to Belfast

Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 17/1

18:45-16:50

1 stop14h 05m

Belfast City

Thu 21/1

11:05-16:50

1 stop13h 45m

£676

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Mon 5/10

20:20-19:25

1 stop15h 05m

Belfast City

Thu 22/10

12:45-18:25

1 stop13h 40m

£703

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Mon 5/10

15:14-15:30

2 stops16h 16m

Belfast City

Thu 22/10

14:20-11:35

1 stop29h 15m

£715

Cheapest one-way

Fastest single journey

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Tue 26/1

18:45-16:45

1 stop14h 00m

£240

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Tue 1/9

18:50-11:40

3 stops32h 50m

£462

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Tue 1/9

13:50-16:55

1 stop19h 05m

£506

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Sorted by cheapest first

Best time to book a flight from Seattle to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from Seattle with our price prediction graph.

SEA-BHD

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

What airport do you fly from for flights from Seattle to Belfast City?
Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Belfast City. You should not have trouble finding flights to Belfast City from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Belfast City per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Seattle airport to Belfast City. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.
How long is the flight from Seattle to Belfast City Airport?
Departing from Seattle to Belfast City Airport will take you 14h 05m. The distance between Seattle and Belfast City Airport is about 4472 mi.
Can I find deals for flights from Seattle to Belfast City that include hotel bookings?
Yes. In addition to deals on Seattle to Belfast City flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Belfast City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Belfast City.
Can I find deals for business class flights from Seattle to Belfast City?
Yes. Cheapflights offers flight deals from Seattle to Belfast City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Cheap flights from Seattle to Belfast City Airport from £240

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Belfast City

Cheapest flights from Seattle to Belfast CityExplore the most affordable flight options available from Seattle to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Explore the most affordable flight options available from Seattle to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from Seattle to Belfast CityDiscover carefully curated flight deals from Seattle to Belfast City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Discover carefully curated flight deals from Seattle to Belfast City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

One-way flights from Seattle to Belfast CitySearch for one-way flight options from Seattle to Belfast City. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Search for one-way flight options from Seattle to Belfast City. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

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

Best time to book a flight from Seattle to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from Seattle with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from Seattle to Belfast City?

How long is the flight from Seattle to Belfast City Airport?

Can I find deals for flights from Seattle to Belfast City that include hotel bookings?

How can I find direct flights from Seattle to Belfast City?

Can I find deals for business class flights from Seattle to Belfast City?

Travelling to a place near Belfast City Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Belfast City

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Belfast City

Explore flights to Belfast City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 August 2026.

Complete your trip

Complete your trip to Belfast City by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from Seattle to Belfast City by cabin class

Find flights from Seattle to Belfast City, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Belfast City flights

Browse other Seattle and Belfast City flight options. Last updated on 27 August 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 27 August 2026.

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Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Belfast City?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Belfast City?

Can Cheapflights find flights from Seattle to Belfast City with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Belfast City become cheaper?

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Cheapest flights from Seattle to Belfast City
Explore the most affordable flight options available from Seattle to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from Seattle to Belfast City
Discover carefully curated flight deals from Seattle to Belfast City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

One-way flights from Seattle to Belfast City
Search for one-way flight options from Seattle to Belfast City. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.