Flight F91609
Frontier Airlines flight F91609
Looking for F91609 in the air…
Milwaukee (MKE) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 73 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 78.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 41
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 56%
- Late-arriving aircraft 25%
- Extreme weather 16%
- Airline (crew, maintenance, cleaning) 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Apr 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 72.7% | 11 |
| October 2025 | 80.0% | 10 |
| November 2025 | 75.0% | 8 |
| March 2026 | 87.5% | 8 |
| April 2026 | 75.0% | 4 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data