SEA - BFS

$354 Find Cheap Flights from Seattle to Belfast - Compare and Save

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Flight Deals

Cheap Flights from Seattle to Belfast Intl (SEA-BFS)

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

Recent round-trip flight deals from Seattle to Belfast Intl

Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
2:35 pm - 10:00 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
23h 25m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen London Stansted
Multiple Airlines Logo
5:40 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
31h 20m3 stops London Gatwick Kastrup Copenhagen Reykjavik Keflavik Intl
$919Multiple Airlines
Sat, Feb 13 - Sat, Feb 27
Multiple Airlines Logo
2:35 pm - 9:10 amSEA  Seattle/Tacoma Intl-BFS Belfast Intl
34h 35m2 stops Reykjavik Keflavik Intl London Heathrow
Multiple Airlines Logo
3:25 pm - 4:50 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
33h 25m1 stop London Stansted
$927Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
2:35 pm - 8:25 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
21h 50m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
5:40 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
31h 20m3 stops London Gatwick Kastrup Copenhagen Reykjavik Keflavik Intl
$950Multiple Airlines
Sat, Feb 13 - Sat, Feb 27
Multiple Airlines Logo
2:35 pm - 8:15 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
21h 40m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
3:25 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
33h 35m3 stops London Stansted Kastrup Copenhagen Reykjavik Keflavik Intl
$973Multiple Airlines
Sat, Feb 13 - Sat, Feb 27
Multiple Airlines Logo
6:40 pm - 9:10 amSEA  Seattle/Tacoma Intl-BFS Belfast Intl
30h 30m1 stop London Heathrow
Multiple Airlines Logo
3:25 pm - 4:50 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
33h 25m1 stop London Stansted
$998Multiple Airlines
Mon, Nov 30 - Mon, Dec 7
Multiple Airlines Logo
2:30 pm - 9:15 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
22h 45m3 stops Calgary Paris Charles de Gaulle London Gatwick
Multiple Airlines Logo
4:45 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
32h 15m3 stops Liverpool J. Lennon Kastrup Copenhagen Reykjavik Keflavik Intl
$999Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
2:35 pm - 6:50 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
20h 15m2 stops Reykjavik Keflavik Intl Paris Charles de Gaulle
Multiple Airlines Logo
7:05 am - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
17h 55m2 stops Paris Charles de Gaulle Reykjavik Keflavik Intl
$1,002Multiple Airlines
Mon, Nov 30 - Mon, Dec 7
Multiple Airlines Logo
5:50 pm - 9:15 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
19h 25m2 stops Frankfurt am Main London Gatwick
Multiple Airlines Logo
4:45 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
32h 15m3 stops Liverpool J. Lennon Kastrup Copenhagen Reykjavik Keflavik Intl
$1,059Multiple Airlines
Mon, Nov 30 - Mon, Dec 7
Multiple Airlines Logo
5:50 pm - 8:10 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
18h 20m2 stops Frankfurt am Main London Gatwick
Multiple Airlines Logo
6:10 am - 3:55 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
17h 45m2 stops London Gatwick Frankfurt am Main
$1,111Multiple Airlines
Sat, Feb 13 - Sat, Feb 27
Multiple Airlines Logo
2:35 pm - 8:15 pmSEA  Seattle/Tacoma Intl-BFS Belfast Intl
21h 40m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
11:00 pm - 5:00 pmBFS  Belfast Intl-SEA Seattle/Tacoma Intl
26h 00m2 stops Manchester Reykjavik Keflavik Intl
$1,112Multiple Airlines
Useful Info

Key details for Seattle to Belfast Intl Airport flights

Cheapest flight

$919
Round-trip flight from Seattle to Belfast Intl Airport

When to book flights from Seattle to Belfast Intl

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

Your Seattle to Belfast Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Do I need a passport to fly from Seattle to Belfast Intl Airport?

    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 Seattle to Belfast Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $919 to $2,134. That means the highest observed fare was about 2x higher than the lowest one.

  • What car rental options are available at Belfast Intl Airport (BFS)?

    Belfast Intl Airport (BFS) hosts 5 major car rental companies, with daily rates averaging $37 for economy cars. Top options include:

    • Budget
    • DRIVALIA
    • Sixt
    • Alamo
    • Hertz

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

    Flights from Seattle to Belfast Intl Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Belfast Intl (BFS).

  • What is the time difference between Seattle and Belfast Intl Airport?

    Belfast Intl Airport is 8 hours ahead of Seattle (British Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Belfast Intl Airport?

    Some of the most popular sights in Belfast Intl Airport are Ulster Hall, Titanic Belfast and Albert Memorial Clock. These are among the most viewed places in Belfast Intl Airport on KAYAK.

More options for your flight from Seattle to Belfast Intl

Complete your trip to Belfast with a hotel stay or car rental

Car rentals in Belfast
Hotels in Belfast
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