About 1 in 4 F9 4690 flights from Ontario arrived 15+ minutes late, diverted or cancelled over the past year (26%); 1.0% were cancelled. The typical flight landed 1 minutes early.
F9 4690: ONT → DFW
Scheduled to leave Ontario at 8:17 a.m. local time. Over the past year it arrived on time 74% of the time (196 flights), in line with other F9 flights on the route at that hour (73%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 32 | 66% |
| Tuesday | 18 | — |
| Wednesday | 24 | 67% |
| Thursday | 31 | 81% |
| Friday | 26 | 92% |
| Saturday | 29 | 79% |
| Sunday | 36 | 64% |
Why it was late
All flights ONT → DFW · Connecting off F9 4690? Check the risk
Questions
How often is F9 4690 from ONT to DFW late?
Frontier Airlines 4690 from Ontario, CA to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 26% of 196 scheduled flights between September 2025 and August 2026. 1.0% 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.