About 1 in 4 F9 4369 flights from Knoxville arrived 15+ minutes late, diverted or cancelled over the past year (23%); 0.0% were cancelled. The typical flight landed 16 minutes early.
F9 4369: TYS → DEN
Scheduled to leave Knoxville at 8:19 p.m. local time. Over the past year it arrived on time 77% of the time (129 flights), better than other F9 flights on the route at that hour (72%). Last seen in the data Aug 17, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 40 | 78% |
| Tuesday | 3 | — |
| Wednesday | 10 | — |
| Thursday | 21 | 76% |
| Friday | 32 | 75% |
| Saturday | 2 | — |
| Sunday | 21 | 90% |
Why it was late
All flights TYS → DEN · Connecting off F9 4369? Check the risk
Questions
How often is F9 4369 from TYS to DEN late?
Frontier Airlines 4369 from Knoxville, TN to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 23% of 129 scheduled flights between September 2025 and August 2026. 0.0% 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.