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

Denver → Chicago via Ontario: arrives on time 54%

  1. 21:15 DEN → 22:35 ONT
    WN 1663 · Southwest · 2h 20m · 35% on time, 0.0% cancelled
  2. 1h 20m layover in Ontario (ONT) · 45 min minimum on one ticket
  3. 23:55 ONT → 05:40 MDW +1 day
    WN 3153 · Southwest · 3h 45m · 83% on time, 0.0% cancelled

Total trip 7h 25m, scheduled departure to arrival (Chicago is 1 h ahead of Denver). Times are local. Both flew on 55 of the last 56 days.

Makes the connection65%The first flight arrived more than 35 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time54%First flight not cancelled (0.0% are) × connection made (65%) × second flight not cancelled (0.0% are) and within 15 minutes (83%).
Total trip7h 25mDEN 21:15 to MDW 05:40, 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.