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

Ontario → San Francisco via Las Vegas: arrives on time 45%

  1. 15:34 ONT → 16:46 LAS
    F9 4758 · Frontier · 1h 12m · 70% on time, 3.4% cancelled
  2. 1h 05m layover in Las Vegas (LAS) · 45 min minimum on one ticket
  3. 17:51 LAS → 19:44 SFO
    F9 3801 · Frontier · 1h 53m · 65% on time, 2.2% cancelled

Total trip 4h 10m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection73%The first flight arrived more than 20 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time45%First flight not cancelled (3.4% are) × connection made (73%) × second flight not cancelled (2.2% are) and within 15 minutes (65%).
Total trip4h 10mONT 15:34 to SFO 19:44, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.