Nonstop flights from Seattle to Boston

3 airlines fly this route, with up to 11 flights a day.

SEASeattle-Tacoma International

2,488 mi · 73 flights a week

BOSBoston Logan International

SEABOS

When they leave

Seattle time

6:03a11:45pFirst departure 6:03 AM, last 11:45 PM

Six in the morning, 6:03 AM to 11:40 AM, then two in the afternoon, 3:36 PM to 3:59 PM, then three in the evening, 11:13 PM to 11:45 PM.

Every flight

Earliest first

6:03 AM→2:23 PMAlaska AirlinesBoeing 737 MAX 9Mon, Thu, Fri, Sat, Sun
7:38 AM→4:10 PMDelta Air LinesAirbus A321neoDaily
8:23 AM→4:53 PMAlaska AirlinesBoeing 737Daily
10:13 AM→6:41 PMAlaska AirlinesBoeing 737 MAX 9Daily
11:15 AM→7:43 PMDelta Air LinesAirbus A321neoDaily
11:40 AM→8:09 PMJetBlueUntil Oct 24, back May 13, 2027Airbus A321Daily
3:36 PM→11:59 PMAlaska AirlinesBoeing 737Daily
3:59 PM→12:17 AM⁺¹Delta Air LinesAirbus A321neoMon, Tue, Wed, Thu, Fri, Sun
11:13 PM→7:35 AM⁺¹Delta Air LinesAirbus A321neoDaily
11:18 PM→7:40 AM⁺¹Alaska AirlinesBoeing 737Mon, Wed, Thu, Fri, Sun
11:18 PM→7:40 AM⁺¹Alaska AirlinesBoeing 737 MAX 9Tue
11:45 PM→8:04 AM⁺¹JetBlueUntil Oct 24, back May 13, 2027Airbus A320Daily

Schedules last checked Sep 19, 2026. Times are local.

Flying from Seattle to Boston

Alaska Airlines flies most often, 4 to 5 times a day on the Boeing 737 and Boeing 737 MAX 9. Delta Air Lines flies 3 to 4 times a day on the Airbus A321neo. JetBlue flies twice a day on the Airbus A320 and Airbus A321.

Flights run every day of the week, from 9 on Saturdays to 11 on Mondays, Thursdays, Fridays and Sundays. The first arrival in Boston is at 2:23 PM and the last at 8:04 AM the next day. The flight covers 2,488 miles.

JetBlue flies it until Oct 24 and is back on May 13, 2027.

Flying back, Boston to Seattle has 73 nonstop flights a week.

Return flights

Boston to SeattleView

Find the cheapest day to fly from Seattle to Boston.

Schedules as of Oct 9, 2026.