tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Seattle → Boston via Salt Lake City: arrives on time 90%

  1. 16:47 SEA → 19:50 SLC
    AS 373 · Alaska · 2h 03m · 80% on time, 0.0% cancelled
  2. 3h 41m layover in Salt Lake City (SLC) · 90 min minimum on separate tickets
  3. 23:31 SLC → 06:05 BOS +1 day
    DL 696 · Delta · 4h 34m · 92% on time, 1.8% cancelled

Total trip 10h 18m, scheduled departure to arrival (Boston is 3 h ahead of Seattle). Times are local. Both flew on 51 of the last 56 days.

Makes the connection100%The first flight arrived more than 131 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 41m layover.
Arrives on time90%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (1.8% are) and within 15 minutes (92%).
Total trip10h 18mSEA 16:47 to BOS 06:05, 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.