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

Ontario → San Jose via Seattle: arrives on time 83%

  1. 12:04 ONT → 14:44 SEA
    AS 654 · Alaska · 2h 40m · 90% on time, 3.9% cancelled
  2. 3h 06m layover in Seattle (SEA) · 90 min minimum on separate tickets
  3. 17:50 SEA → 20:12 SJC
    DL 4100 · Delta, flown by SkyWest · 2h 22m · 87% on time, 0.7% cancelled

Total trip 8h 08m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 96 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 06m layover.
Arrives on time83%First flight not cancelled (3.9% are) × connection made (99%) × second flight not cancelled (0.7% are) and within 15 minutes (87%).
Total trip8h 08mONT 12:04 to SJC 20:12, 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.