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

Philadelphia → San Diego via Denver: arrives on time 85%

  1. 10:00 PHL → 12:01 DEN
    UA 1537 · United · 4h 01m · 79% on time, 0.0% cancelled
  2. 3h 54m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 15:55 DEN → 17:20 SAN
    UA 1281 · United · 2h 25m · 85% on time, 0.3% cancelled

Total trip 10h 20m, scheduled departure to arrival (San Diego is 3 h behind Philadelphia). Times are local. Both flew on 49 of the last 56 days.

Makes the connection100%The first flight arrived more than 189 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 54m layover.
Arrives on time85%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.3% are) and within 15 minutes (85%).
Total trip10h 20mPHL 10:00 to SAN 17:20, 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.