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

Ontario → Dulles via Seattle: arrives on time 80%

  1. 17:26 ONT → 20:06 SEA
    AS 575 · Alaska · 2h 40m · 61% on time, 2.2% cancelled
  2. 2h 37m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 22:43 SEA → 06:39 IAD +1 day
    AS 367 · Alaska · 4h 56m · 84% on time, 0.0% cancelled

Total trip 10h 13m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 45 of the last 56 days.

Makes the connection98%The first flight arrived more than 112 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 37m layover.
Arrives on time80%First flight not cancelled (2.2% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (84%).
Total trip10h 13mONT 17:26 to IAD 06:39, 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.