tailodds FORECAST
Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

San Francisco → Boston via Seattle: arrives on time 75%

  1. 17:38 SFO → 19:47 SEA
    AS 758 · Alaska · 2h 09m · 73% on time, 0.4% cancelled
  2. 3h 31m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 23:18 SEA → 07:40 BOS +1 day
    AS 536 · Alaska · 5h 22m · 78% on time, 0.8% cancelled

Total trip 11h 02m, scheduled departure to arrival (Boston is 3 h ahead of San Francisco). Times are local. Both flew on 49 of the last 56 days.

Makes the connection98%The first flight arrived more than 166 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 31m layover.
Arrives on time75%First flight not cancelled (0.4% are) × connection made (98%) × second flight not cancelled (0.8% are) and within 15 minutes (78%).
Total trip11h 02mSFO 17:38 to BOS 07:40, layover included

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.