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

San Diego → St Louis via Chicago: arrives on time 92%

  1. 22:45 SAN → 05:11 ORD
    AA 1543 · American · 4h 15m · 90% on time, 1.4% cancelled
  2. 1h 54m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 07:05 ORD → 08:31 STL +1 day
    AA 4104 · American, flown by Envoy · 1h 27m · 96% on time, 0.0% cancelled

Total trip 7h 47m, scheduled departure to arrival (St Louis is 2 h ahead of San Diego). Times are local. Both flew on 55 of the last 56 days.

Makes the connection97%The first flight arrived more than 69 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 54m layover.
Arrives on time92%First flight not cancelled (1.4% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (96%).
Total trip7h 47mSAN 22:45 to STL 08:31, 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.