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

Ontario → Chicago via Seattle: arrives on time 77%

  1. 12:04 ONT → 14:44 SEA
    AS 654 · Alaska · 2h 40m · 90% on time, 3.9% cancelled
  2. 3h 04m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 17:48 SEA → 23:59 ORD
    AS 538 · Alaska · 4h 11m · 80% on time, 0.9% cancelled

Total trip 9h 55m, scheduled departure to arrival (Chicago is 2 h ahead of Ontario). Times are local. Both flew on 55 of the last 56 days.

Makes the connection100%The first flight arrived more than 139 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 04m layover.
Arrives on time77%First flight not cancelled (3.9% are) × connection made (100%) × second flight not cancelled (0.9% are) and within 15 minutes (80%).
Total trip9h 55mONT 12:04 to ORD 23:59, 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.