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

St Louis → San Francisco via Denver: arrives on time 12%

  1. 05:45 STL → 07:00 DEN
    WN 3909 · Southwest · 2h 15m · 91% on time, 0.0% cancelled
  2. 48m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 07:48 DEN → 09:28 SFO
    WN 2386 · Southwest · 2h 40m · 16% on time, 2.0% cancelled

Total trip 5h 43m, scheduled departure to arrival (San Francisco is 2 h behind St Louis). Times are local. Both flew on 48 of the last 56 days.

Makes the connection78%The first flight arrived more than 3 minutes late on 22% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time12%First flight not cancelled (0.0% are) × connection made (78%) × second flight not cancelled (2.0% are) and within 15 minutes (16%).
Total trip5h 43mSTL 05:45 to SFO 09:28, 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.