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

Boston → San Francisco via Seattle: arrives on time 67%

  1. 07:03 BOS → 10:26 SEA
    AS 459 · Alaska · 6h 23m · 75% on time, 0.8% cancelled
  2. 2h 54m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 13:20 SEA → 15:31 SFO
    AS 680 · Alaska · 2h 11m · 69% on time, 1.2% cancelled

Total trip 11h 28m, scheduled departure to arrival (San Francisco is 3 h behind Boston). Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 129 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 2h 54m layover.
Arrives on time67%First flight not cancelled (0.8% are) × connection made (99%) × second flight not cancelled (1.2% are) and within 15 minutes (69%).
Total trip11h 28mBOS 07:03 to SFO 15:31, 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.