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

Denver → Ontario via Phoenix: arrives on time 12%

  1. 20:05 DEN → 21:00 PHX
    WN 4447 · Southwest · 1h 55m · 33% on time, 0.0% cancelled
  2. 50m layover in Phoenix (PHX) · 45 min minimum on one ticket
  3. 21:50 PHX → 23:00 ONT
    WN 3313 · Southwest · 1h 10m · 39% on time, 0.0% cancelled

Total trip 3h 55m, scheduled departure to arrival (Ontario is 1 h behind Denver). Times are local. Both flew on 31 of the last 56 days.

Makes the connection30%The first flight arrived more than 5 minutes late on 70% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time12%First flight not cancelled (0.0% are) × connection made (30%) × second flight not cancelled (0.0% are) and within 15 minutes (39%).
Total trip3h 55mDEN 20:05 to ONT 23:00, 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.