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

Ontario → Dulles via Denver: arrives on time 78%

  1. 05:00 ONT → 08:20 DEN
    UA 2446 · United · 2h 20m · 94% on time, 0.4% cancelled
  2. 2h 00m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 10:20 DEN → 15:53 IAD
    UA 2087 · United · 3h 33m · 81% on time, 0.9% cancelled

Total trip 7h 53m, 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 connection98%The first flight arrived more than 75 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 00m layover.
Arrives on time78%First flight not cancelled (0.4% are) × connection made (98%) × second flight not cancelled (0.9% are) and within 15 minutes (81%).
Total trip7h 53mONT 05:00 to IAD 15:53, 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.