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

Denver → Ontario via San Francisco: arrives on time 64%

  1. 17:54 DEN → 19:40 SFO
    UA 1007 · United · 2h 46m · 68% on time, 0.3% cancelled
  2. 1h 20m layover in San Francisco (SFO) · 45 min minimum on one ticket
  3. 21:00 SFO → 22:37 ONT
    UA 552 · United · 1h 37m · 83% on time, 0.5% cancelled

Total trip 5h 43m, scheduled departure to arrival (Ontario is 1 h behind Denver). Times are local. Both flew on 56 of the last 56 days.

Makes the connection77%The first flight arrived more than 35 minutes late on 23% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time64%First flight not cancelled (0.3% are) × connection made (77%) × second flight not cancelled (0.5% are) and within 15 minutes (83%).
Total trip5h 43mDEN 17:54 to ONT 22:37, 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.