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

Ontario → San Jose via Denver: arrives on time 16%

  1. 14:30 ONT → 17:40 DEN
    WN 3147 · Southwest · 2h 10m · 24% on time, 0.0% cancelled
  2. 1h 15m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 18:55 DEN → 20:25 SJC
    WN 1727 · Southwest · 2h 32m · 29% on time, 2.0% cancelled

Total trip 5h 57m, scheduled departure to arrival. Times are local. Both flew on 24 of the last 56 days.

Makes the connection56%The first flight arrived more than 30 minutes late on 44% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time16%First flight not cancelled (0.0% are) × connection made (56%) × second flight not cancelled (2.0% are) and within 15 minutes (29%).
Total trip5h 57mONT 14:30 to SJC 20:25, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.