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

Ontario → Dulles via Denver: arrives on time 84%

  1. 08:05 ONT → 11:15 DEN
    WN 3145 · Southwest · 2h 10m · 95% on time, 0.0% cancelled
  2. 2h 38m layover in Denver (DEN) · 90 min minimum on separate tickets
  3. 13:53 DEN → 19:22 IAD
    UA 347 · United · 3h 29m · 87% on time, 0.3% cancelled

Total trip 8h 17m, 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 connection96%The first flight arrived more than 68 minutes late on 4% of the days it flew: too late for the 90-minute minimum connection on a 2h 38m layover.
Arrives on time84%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (0.3% are) and within 15 minutes (87%).
Total trip8h 17mONT 08:05 to IAD 19:22, 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.