About 1 in 3 F9 4758 flights from Ontario arrived 15+ minutes late, diverted or cancelled over the past year (34%); 2.7% were cancelled. The typical flight landed 1 minutes early.
F9 4758: ONT → LAS
Scheduled to leave Ontario at 3:40 p.m. local time. Over the past year it arrived on time 66% of the time (220 flights), worse than other F9 flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.
Usually Frontier Airlines's last flight of the day from Ontario to Las Vegas (70% of days). Frontier Airlines's last ONT–LAS flight was cancelled 1.4% of the time, against 1.4% for its earlier ones. If it's cancelled, the next Frontier Airlines flight is usually around 11:52 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 36 | 58% |
| Tuesday | 24 | 79% |
| Wednesday | 21 | 81% |
| Thursday | 38 | 63% |
| Friday | 38 | 55% |
| Saturday | 20 | 85% |
| Sunday | 43 | 60% |
Why it was late
All flights ONT → LAS · Connecting off F9 4758? Check the risk
Questions
How often is F9 4758 from ONT to LAS late?
Frontier Airlines 4758 from Ontario, CA to Las Vegas, NV arrived 15 or more minutes late, was diverted or was cancelled on 34% of 220 scheduled flights between September 2025 and August 2026. 2.7% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Frontier Airlines for today's flight. Method.