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

Portland → Ontario via Seattle: arrives on time 84%

  1. 05:00 PDX → 05:53 SEA
    AS 2431 · Alaska, flown by Horizon · 53m · 94% on time, 1.9% cancelled
  2. 2h 32m layover in Seattle (SEA) · 90 min minimum on separate tickets
  3. 08:25 SEA → 11:17 ONT
    DL 4070 · Delta, flown by SkyWest · 2h 52m · 89% on time, 0.0% cancelled

Total trip 6h 17m, scheduled departure to arrival. Times are local. Both flew on 41 of the last 56 days.

Makes the connection96%The first flight arrived more than 62 minutes late on 4% of the days it flew: too late for the 90-minute minimum connection on a 2h 32m layover.
Arrives on time84%First flight not cancelled (1.9% are) × connection made (96%) × second flight not cancelled (0.0% are) and within 15 minutes (89%).
Total trip6h 17mPDX 05:00 to ONT 11:17, 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.