Find cheap flights from Belfast Intl Airport to Seattle

BFS - SEA

Find cheap flights from Belfast Intl Airport to Seattle

Search hundreds of travel sites at once for deals on flights to Seattle. Bundle your flight + hotel and save!

Round-trip
Economy
Belfast (BFS)
Seattle/Tacoma Intl
Sat 9/25
Sat 10/2
Any month
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Include hotels

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $465 or less one-way.

FAQs for booking Belfast Intl Airport to Seattle flights

Can I fly to Seattle? Are there any travel restrictions when entering Seattle?

Can I fly to Seattle without having to quarantine on arrival?

Do I need to take a coronavirus (Covid-19) test before flying to Seattle?

What documents do I need to fly to Seattle?

What other coronavirus (Covid-19) restrictions are there in Seattle?

How long does a flight from Belfast Intl Airport to Seattle take?

Do I need a passport to fly between Belfast Intl Airport and Seattle?

How does KAYAK find such low prices on flights from Belfast Intl Airport to Seattle?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to Seattle?

What is the Hacker Fare option on flights from Belfast Intl Airport to Seattle?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to Seattle?

COVID-19 information

Safety measures for airlines flying from Belfast Intl Airport to Seattle

Airlines flying from Belfast Intl Airport to Seattle have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Belfast Intl Airport to Seattle

Mandatory masks

Masks required on board, masks provided on flights from Belfast Intl Airport to Seattle

Social distancing seating

Middle seats unavailable to book on flights from Belfast Intl Airport to Seattle

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Belfast Intl Airport to Seattle

Book cheap flights from Belfast Intl Airport to Seattle

Recent round-trip flight deals

3/1
Tue
2 stops
Multiple Airlines
16h 35m
BFS - SEA
3/8
Tue
3 stops
Multiple Airlines
27h 30m
SEA - BFS
1/15
Sat
2 stops
Multiple Airlines
18h 55m
BFS - SEA
1/28
Fri
2 stops
Multiple Airlines
18h 30m
SEA - BFS
1/15
Sat
1 stop
Multiple Airlines
15h 40m
BFS - SEA
1/28
Fri
2 stops
Multiple Airlines
18h 30m
SEA - BFS
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