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

Ontario → Dulles via Seattle: arrives on time 92%

  1. 06:20 ONT → 09:17 SEA
    DL 3816 · Delta, flown by SkyWest · 2h 57m · 94% on time, 0.0% cancelled
  2. 3h 43m layover in Seattle (SEA) · 90 min minimum on separate tickets
  3. 13:00 SEA → 21:06 IAD
    UA 2131 · United · 5h 06m · 93% on time, 0.0% cancelled

Total trip 11h 46m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 133 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 43m layover.
Arrives on time92%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (93%).
Total trip11h 46mONT 06:20 to IAD 21:06, 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.