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

St Louis → Los Angeles via Denver: arrives on time 12%

  1. 16:00 STL → 17:20 DEN
    WN 3912 · Southwest · 2h 20m · 51% on time, 0.0% cancelled
  2. 1h 25m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 18:45 DEN → 20:15 LAX
    WN 2217 · Southwest · 2h 30m · 16% on time, 3.5% cancelled

Total trip 6h 15m, scheduled departure to arrival (Los Angeles is 2 h behind St Louis). Times are local. Both flew on 55 of the last 56 days.

Makes the connection74%The first flight arrived more than 40 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 1h 25m layover.
Arrives on time12%First flight not cancelled (0.0% are) × connection made (74%) × second flight not cancelled (3.5% are) and within 15 minutes (16%).
Total trip6h 15mSTL 16:00 to LAX 20:15, 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.