Flight F91439
Frontier Airlines flight F91439
Looking for F91439 in the air…
Salt Lake City (SLC) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 77 minutes. It was cancelled 1.7% of the time.
- On-time arrivals
- 78.8%
- Less than 15 minutes late
- Cancelled
- 1.7%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 120
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 85%
- Air traffic control & airport 10%
- Airline (crew, maintenance, cleaning) 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
May 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 61.5% | 13 |
| October 2025 | 81.0% | 21 |
| November 2025 | 66.7% | 6 |
| December 2025 | 94.1% | 17 |
| January 2026 | 75.0% | 18 |
| February 2026 | 100.0% | 10 |
| March 2026 | 94.1% | 17 |
| April 2026 | 66.7% | 12 |
| May 2026 | 33.3% | 6 |
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