Flight F91921
Frontier Airlines flight F91921
Looking for F91921 in the air…
Tucson (TUS) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 41 minutes. It was cancelled 4.2% of the time.
- On-time arrivals
- 87.0%
- Less than 15 minutes late
- Cancelled
- 4.2%
- Of scheduled flights
- Average delay when late
- 41 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 60%
- Air traffic control & airport 36%
- Airline (crew, maintenance, cleaning) 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Jan 2026
Apr 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| January 2026 | 66.7% | 3 |
| February 2026 | 100.0% | 8 |
| March 2026 | 100.0% | 9 |
| April 2026 | 50.0% | 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