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

Boston → St Louis via Philadelphia: arrives on time 86%

  1. 06:00 BOS → 07:37 PHL
    AA 1146 · American · 1h 43m · 95% on time, 2.9% cancelled
  2. 1h 23m layover in Philadelphia (PHL) · 45 min minimum on one ticket
  3. 09:00 PHL → 10:36 STL
    AA 2720 · American · 2h 35m · 92% on time, 0.0% cancelled

Total trip 5h 35m, scheduled departure to arrival (St Louis is 1 h behind Boston). Times are local. Both flew on 48 of the last 56 days.

Makes the connection96%The first flight arrived more than 38 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 23m layover.
Arrives on time86%First flight not cancelled (2.9% are) × connection made (96%) × second flight not cancelled (0.0% are) and within 15 minutes (92%).
Total trip5h 35mBOS 06:00 to STL 10:36, 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.