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

Seattle → Boston via Newark: arrives on time 90%

  1. 22:40 SEA → 06:59 EWR
    AS 314 · Alaska · 5h 19m · 86% on time, 0.5% cancelled
  2. 2h 31m layover in Newark (EWR) · 90 min minimum on separate tickets
  3. 09:30 EWR → 10:55 BOS +1 day
    DL 5764 · Delta, flown by Republic · 1h 25m · 95% on time, 2.5% cancelled

Total trip 9h 15m, scheduled departure to arrival (Boston is 3 h ahead of Seattle). Times are local. Both flew on 44 of the last 56 days.

Makes the connection98%The first flight arrived more than 61 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 2h 31m layover.
Arrives on time90%First flight not cancelled (0.5% are) × connection made (98%) × second flight not cancelled (2.5% are) and within 15 minutes (95%).
Total trip9h 15mSEA 22:40 to BOS 10:55, 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.