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

Ontario → Portland via Seattle: arrives on time 79%

  1. 11:59 ONT → 14:53 SEA
    DL 4070 · Delta, flown by SkyWest · 3h 01m · 91% on time, 0.0% cancelled
  2. 1h 08m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 16:01 SEA → 17:09 PDX
    DL 3918 · Delta, flown by SkyWest · 1h 08m · 85% on time, 0.3% cancelled

Total trip 5h 10m, scheduled departure to arrival. Times are local. Both flew on 45 of the last 56 days.

Makes the connection93%The first flight arrived more than 23 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 08m layover.
Arrives on time79%First flight not cancelled (0.0% are) × connection made (93%) × second flight not cancelled (0.3% are) and within 15 minutes (85%).
Total trip5h 10mONT 11:59 to PDX 17:09, 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.