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

Ontario → Dulles via Denver: arrives on time 64%

  1. 13:18 ONT → 16:38 DEN
    UA 1263 · United · 2h 20m · 84% on time, 0.5% cancelled
  2. 1h 22m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 18:00 DEN → 23:32 IAD
    UA 2408 · United · 3h 32m · 71% on time, 0.6% cancelled

Total trip 7h 14m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 55 of the last 56 days.

Makes the connection91%The first flight arrived more than 37 minutes late on 9% of the days it flew: too late for the 45-minute minimum connection on a 1h 22m layover.
Arrives on time64%First flight not cancelled (0.5% are) × connection made (91%) × second flight not cancelled (0.6% are) and within 15 minutes (71%).
Total trip7h 14mONT 13:18 to IAD 23:32, 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.