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

Portland → Ontario via Seattle: arrives on time 86%

  1. 10:35 PDX → 11:43 SEA
    AS 3431 · Alaska, flown by SkyWest · 1h 08m · 81% on time, 0.0% cancelled
  2. 2h 52m layover in Seattle (SEA) · 90 min minimum on separate tickets
  3. 14:35 SEA → 17:19 ONT
    DL 4031 · Delta, flown by SkyWest · 2h 44m · 88% on time, 0.3% cancelled

Total trip 6h 44m, scheduled departure to arrival. Times are local. Both flew on 51 of the last 56 days.

Makes the connection98%The first flight arrived more than 82 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 2h 52m layover.
Arrives on time86%First flight not cancelled (0.0% are) × connection made (98%) × second flight not cancelled (0.3% are) and within 15 minutes (88%).
Total trip6h 44mPDX 10:35 to ONT 17:19, 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.