Outbound
5 hours 10 minutes
Return
5 hours 40 minutes
Daily Flights
6+
Airlines
3
Timezone note
Boston is 3 hours ahead of Seattle (Eastern vs Pacific Time).
About this route
Seattle to Boston flights
Seattle to Boston is a long-haul coast-to-coast route connecting the Pacific Northwest tech corridor with New England's innovation ecosystem. Alaska, Delta, and JetBlue compete for Amazon, Microsoft, and biotech professionals making this cross-country trip. The 3-hour time difference makes red-eye flights particularly popular for business travelers maximizing their workday.
At over 5 hours, this is among the longest domestic nonstops. Boston's Logan Airport can experience winter weather delays from nor'easters, while Seattle's low visibility conditions can slow departures. The massive time zone gap means a breakfast departure from Seattle lands at dinnertime in Boston. Landing alerts bridge this gap for families and colleagues tracking arrivals.
How it works
Track Seattle to Boston.
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FAQ
Frequently asked questions.
How long is the Seattle to Boston flight?
About 5 hours 10 minutes eastbound and 5 hours 40 minutes on the return.
Which airlines fly SEA to BOS nonstop?
Alaska, Delta, and JetBlue all offer nonstop transcontinental service.
What's the time difference?
Boston is 3 hours ahead. Morning Seattle departures arrive in the evening Eastern Time. Landing alerts track actual arrival.
Know when they land in Boston
Avoid waiting at arrivals. Get a text the moment their Seattle to Boston flight touches down.
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Founder, SkyText
Aviation lover who built SkyText because families deserve to know when someone lands safely. Has tracked more flights than he'd like to admit.