Which airports can I use when flying from Belfast to Seattle?

Flights from Belfast to Seattle may depart from several airports in Belfast area, including Belfast Intl (BFS) and Belfast City (BHD). Flights usually arrive at Seattle/Tacoma Intl (SEA).

Which cabin classes can I book on flights from Belfast to Seattle?

Only Economy class is available on flights from Belfast to Seattle.

Which airports do connecting flights from Belfast to Seattle pass through?

Most connecting flights from Belfast to Seattle pass through London Heathrow (LHR), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from Belfast to Seattle?

Yes. Flexible dates can save you up to 37% on flights from Belfast to Seattle. Thursday is the cheapest departure day at £568 return on average, while Tuesday is the most expensive at £896, a difference of £328. KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Seattle?

Some of the most popular sights in Seattle are The Westin Seattle, Seattle Center, and Seattle Marriott Waterfront. These are among the most viewed places in Seattle on KAYAK.

How long is a flight from Belfast to Seattle?

A direct flight from Belfast to Seattle takes 00m, covering 4,471 miles.

Do I need a passport to fly from Belfast to Seattle?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Belfast to Seattle changed much recently?

Yes. Based on fares seen in the past 5 days, return prices on this route varied from about £758 to £1,101. That means the highest observed fare was about 45% higher than the lowest one.

What is the time difference between Belfast and Seattle?

Seattle is 7 hours behind Belfast (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £46 for economy cars. Top options include: • Fox • Europcar • Thrifty • Budget • Hertz

How much is a return flight from Belfast to Seattle?

Return flights from Belfast to Seattle typically range from £724 to £733. The lowest price found in the past 5 days was £758 on British Airways.

Which airline is the cheapest to fly from Belfast to Seattle?

British Airways (£758) offered the cheapest return ticket from Belfast to Seattle in the last 5 days.

What is the cheapest stopover airport when flying from Belfast to Seattle?

Flights via London Heathrow (LHR) offer the most affordable fares, with an average return price of £703. Based on KAYAK data over the past 3 months.

When flying from Belfast to Seattle, which airport offers the shortest stopover?

London Heathrow (LHR) had the shortest average connection time for Belfast to Seattle stopovers at 8h 43m over the past 3 months.

£758 CHEAP FLIGHTS from Belfast to Seattle (BF1 - SEA)

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Cheapest return flight

£758

Typical prices: £724-£733

British Airways

Sun 14/1Thu 18/1

BHD - SEA • 1 stop

Direct flights

Not available

There are currently no direct flights between Belfast and Seattle. You'll need to take a connecting flight to reach the destination.

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Flight Deals

Cheap Flights from Belfast to Seattle

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Recent return flight deals from Belfast to Seattle

Thu, 14 Jan - Mon, 18 Jan

15:25 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

33h 25m1 stop London Heathrow

10:17 - 15:55SEA Seattle/Tacoma Intl-BHD Belfast City

21h 38m2 stops Chicago O'Hare Intl London Heathrow

£758British Airways

Thu, 14 Jan - Mon, 18 Jan

14:10 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

34h 40m1 stop London Heathrow

18:45 - 18:35SEA Seattle/Tacoma Intl-BHD Belfast City

15h 50m1 stop London Heathrow

£760British Airways

Thu, 14 Jan - Sun, 17 Jan

11:05 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

10:17 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

22h 33m2 stops Chicago O'Hare Intl London Heathrow

£760British Airways

Thu, 14 Jan - Sun, 17 Jan

11:05 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

10:17 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

22h 33m2 stops Chicago O'Hare Intl London Heathrow

£761British Airways

Thu, 14 Jan - Mon, 18 Jan

11:05 - 00:43BHD Belfast City-SEA Seattle/Tacoma Intl

21h 38m2 stops London Heathrow Chicago O'Hare Intl

10:17 - 15:55SEA Seattle/Tacoma Intl-BHD Belfast City

21h 38m2 stops Chicago O'Hare Intl London Heathrow

£763British Airways

Thu, 14 Jan - Mon, 18 Jan

11:05 - 00:43BHD Belfast City-SEA Seattle/Tacoma Intl

21h 38m2 stops London Heathrow Chicago O'Hare Intl

10:17 - 15:55SEA Seattle/Tacoma Intl-BHD Belfast City

21h 38m2 stops Chicago O'Hare Intl London Heathrow

£763British Airways

Thu, 14 Jan - Mon, 18 Jan

11:05 - 00:43BHD Belfast City-SEA Seattle/Tacoma Intl

21h 38m2 stops London Heathrow Chicago O'Hare Intl

10:17 - 15:55SEA Seattle/Tacoma Intl-BHD Belfast City

21h 38m2 stops Chicago O'Hare Intl London Heathrow

£765British Airways

Thu, 14 Jan - Sun, 17 Jan

06:30 - 00:43BHD Belfast City-SEA Seattle/Tacoma Intl

26h 13m2 stops London Heathrow Chicago O'Hare Intl

06:06 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

26h 44m2 stops Chicago O'Hare Intl London Heathrow

£766British Airways

Thu, 14 Jan - Sun, 17 Jan

17:50 - 20:13BHD Belfast City-SEA Seattle/Tacoma Intl

34h 23m2 stops London Heathrow Chicago O'Hare Intl

10:17 - 13:50SEA Seattle/Tacoma Intl-BHD Belfast City

19h 33m2 stops Chicago O'Hare Intl London Heathrow

£767British Airways

Thu, 10 Dec - Thu, 17 Dec

06:30 - 11:25BHD Belfast City-SEA Seattle/Tacoma Intl

12h 55m1 stop London Heathrow

14:01 - 16:55SEA Seattle/Tacoma Intl-BHD Belfast City

18h 54m2 stops Chicago O'Hare Intl London Heathrow

£976British Airways

Booking Insights

Price, demand, and travel trends for Belfast to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Stopovers

How much is a return flight from Belfast to Seattle? This analysis is based on the cheapest return price found on KAYAK in the last 12 months by searching for a flight from Belfast to Seattle departing in January.

Find deals

Cheapest flight	£758

Return flight from Belfast City Airport to Seattle

When to book flights from Belfast to Seattle

Are your dates flexible? Find out the best times to travel from Belfast to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which cabin classes can I book on flights from Belfast to Seattle?
Only Economy class is available on flights from Belfast to Seattle.
How long is a flight from Belfast to Seattle?
A direct flight from Belfast to Seattle takes 00m, covering 4,471 miles.
Do I need a passport to fly from Belfast to Seattle?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Belfast to Seattle changed much recently?
Yes. Based on fares seen in the past 5 days, return prices on this route varied from about £758 to £1,101. That means the highest observed fare was about 45% higher than the lowest one.
Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?
Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £46 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Budget
• Hertz
Which airports can I use when flying from Belfast to Seattle?
Flights from Belfast to Seattle may depart from several airports in Belfast area, including Belfast Intl (BFS) and Belfast City (BHD). Flights usually arrive at Seattle/Tacoma Intl (SEA).
Which airports do connecting flights from Belfast to Seattle pass through?
Most connecting flights from Belfast to Seattle pass through London Heathrow (LHR), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Belfast to Seattle?
Yes. Flexible dates can save you up to 37% on flights from Belfast to Seattle. Thursday is the cheapest departure day at £568 return on average, while Tuesday is the most expensive at £896, a difference of £328.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between Belfast and Seattle?
Seattle is 7 hours behind Belfast (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Seattle?
Some of the most popular sights in Seattle are The Westin Seattle, Seattle Center, and Seattle Marriott Waterfront. These are among the most viewed places in Seattle on KAYAK.

If your dates are flexible, aim for a Thursday departure and avoid flying on Tuesday. On this route, Thursday flights average £568, about £328 less than Tuesday fares (37% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.

• Coast Gateway Hotel
• Seattle Airport Marriott
• Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

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£758 Find Cheap Flights from Belfast to Seattle – Compare and Save

Everything you should know

Cheap Flights from Belfast to Seattle

Recent return flight deals from Belfast to Seattle

Recent one-way flight deals from Belfast to Seattle

Price, demand, and travel trends for Belfast to Seattle flights

How much is a return flight from Belfast to Seattle?

Which airline is the cheapest to fly from Belfast to Seattle?

What is the cheapest stopover airport when flying from Belfast to Seattle?

When flying from Belfast to Seattle, which airport offers the shortest stopover?

Key details for Belfast to Seattle flights

Cheapest flight

When to book flights from Belfast to Seattle

Your Belfast to Seattle flight questions, answered

Your guide to booking Belfast to Seattle flights

More options for your flight from Belfast to Seattle

Complete your trip to Seattle with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights from Belfast to Seattle

Find direct flights to and from Belfast and Seattle

Flights from domestic origins to Seattle

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