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

Ontario → Denver via Nashville: arrives on time 29%

  1. 09:45 ONT → 15:35 BNA
    WN 3142 · Southwest · 3h 50m · 54% on time, 2.4% cancelled
  2. 1h 15m layover in Nashville (BNA) · 45 min minimum on one ticket
  3. 16:50 BNA → 18:50 DEN
    WN 504 · Southwest · 3h 00m · 39% on time, 0.0% cancelled

Total trip 8h 05m, scheduled departure to arrival (Denver is 1 h ahead of Ontario). Times are local. Both flew on 40 of the last 56 days.

Makes the connection78%The first flight arrived more than 30 minutes late on 22% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time29%First flight not cancelled (2.4% are) × connection made (78%) × second flight not cancelled (0.0% are) and within 15 minutes (39%).
Total trip8h 05mONT 09:45 to DEN 18:50, 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.