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

St Louis → Nashville via Denver: arrives on time 17%

  1. 16:00 STL → 17:20 DEN
    WN 3912 · Southwest · 2h 20m · 51% on time, 0.0% cancelled
  2. 1h 05m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 18:25 DEN → 22:05 BNA
    WN 1488 · Southwest · 2h 40m · 32% on time, 0.0% cancelled

Total trip 6h 05m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection55%The first flight arrived more than 20 minutes late on 45% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time17%First flight not cancelled (0.0% are) × connection made (55%) × second flight not cancelled (0.0% are) and within 15 minutes (32%).
Total trip6h 05mSTL 16:00 to BNA 22:05, 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.