tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Ontario → Chicago via Portland: arrives on time 86%

  1. 17:32 ONT → 19:49 PDX
    AS 2456 · Alaska, flown by Horizon · 2h 17m · 93% on time, 1.3% cancelled
  2. 3h 41m layover in Portland (PDX) · 90 min minimum on separate tickets
  3. 23:30 PDX → 05:20 MDW +1 day
    WN 3203 · Southwest · 3h 50m · 89% on time, 1.7% cancelled

Total trip 9h 48m, scheduled departure to arrival (Chicago is 2 h ahead of Ontario). Times are local. Both flew on 52 of the last 56 days.

Makes the connection99%The first flight arrived more than 131 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 41m layover.
Arrives on time86%First flight not cancelled (1.3% are) × connection made (99%) × second flight not cancelled (1.7% are) and within 15 minutes (89%).
Total trip9h 48mONT 17:32 to MDW 05:20, 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.