Direct flights from Seattle to Boston SEA → BOS
Alaska Airlines, Delta Air Lines and NetJets Aviation operate nonstop flights from Seattle (SEA) to Boston (BOS). The nonstop flight takes around ~5h, covering 2,489 miles (4,006 km) and operates multiple daily. Updated 9 June 2026.
SEA
→
BOS
Round trip
1 adult
Economy
Pick dates
Alaska Airlines
AS
Delta Air Lines
DL
NetJets Aviation
1I
Departure Schedule next 7 days
Sign up to see Boston schedule from SEA
Already have an account? Sign in
Frequently asked questions
Is there a direct flight from Seattle to Boston?
Yes, Alaska Airlines, Delta Air Lines and 1 more airline operate nonstop flights from Seattle (SEA) to Boston (BOS).
Which airlines fly direct from Seattle to Boston?
Alaska Airlines, Delta Air Lines, NetJets Aviation operate nonstop flights from Seattle to Boston.
How long is the flight from Seattle to Boston?
The nonstop flight from Seattle to Boston takes ~5h (approximately 4006 km).
How often do direct flights operate from Seattle to Boston?
Nonstop flights from Seattle to Boston operate multiple daily.