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

Seattle → Philadelphia via Boston: arrives on time 85%

  1. 23:15 SEA → 07:35 BOS
    DL 473 · Delta · 5h 20m · 82% on time, 1.4% cancelled
  2. 3h 15m layover in Boston (BOS) · 45 min minimum on one ticket
  3. 10:50 BOS → 12:28 PHL +1 day
    DL 5805 · Delta, flown by Republic · 1h 38m · 87% on time, 0.0% cancelled

Total trip 10h 13m, scheduled departure to arrival (Philadelphia is 3 h ahead of Seattle). Times are local. Both flew on 36 of the last 56 days.

Makes the connection100%The first flight arrived more than 150 minutes late on <1% of the days it flew: too late for the 45-minute minimum connection on a 3h 15m layover.
Arrives on time85%First flight not cancelled (1.4% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (87%).
Total trip10h 13mSEA 23:15 to PHL 12:28, 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.