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

Birmingham → Nashville via Denver: arrives on time 18%

  1. 17:15 BHM → 19:05 DEN
    WN 437 · Southwest · 2h 50m · 50% on time, 0.0% cancelled
  2. 1h 05m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 20:10 DEN → 23:40 BNA
    WN 4429 · Southwest · 2h 30m · 33% on time, 0.0% cancelled

Total trip 6h 25m, scheduled departure to arrival. Times are local. Both flew on 24 of the last 56 days.

Makes the connection54%The first flight arrived more than 20 minutes late on 46% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time18%First flight not cancelled (0.0% are) × connection made (54%) × second flight not cancelled (0.0% are) and within 15 minutes (33%).
Total trip6h 25mBHM 17:15 to BNA 23:40, 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.