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

Ontario → Houston via Chicago: arrives on time 73%

  1. 23:55 ONT → 05:40 MDW
    WN 3153 · Southwest · 3h 45m · 83% on time, 0.0% cancelled
  2. 1h 00m layover in Chicago (MDW) · 45 min minimum on one ticket
  3. 06:40 MDW → 09:15 HOU +1 day
    WN 4497 · Southwest · 2h 35m · 88% on time, 0.0% cancelled

Total trip 7h 20m, scheduled departure to arrival (Houston is 2 h ahead of Ontario). Times are local. Both flew on 40 of the last 56 days.

Makes the connection83%The first flight arrived more than 15 minutes late on 17% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time73%First flight not cancelled (0.0% are) × connection made (83%) × second flight not cancelled (0.0% are) and within 15 minutes (88%).
Total trip7h 20mONT 23:55 to HOU 09:15, 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.