Frontier Airlines ONT to SLC on-time performance
Frontier Airlines nonstop flights from Ontario to Salt Lake City · Aug 2025 – Jul 2026
On-time arrivals
87%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
6 min
42 min when late
Rank on route
#3 of 3
route average 92% on time
Key facts
- Frontier Airlines flights on ONT to SLC arrived on time 87% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 3% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 92% on time overall.
- The largest source of delay minutes was late-arriving aircraft (46%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft46%
- Extreme weather24%
- Airline (crew, maintenance, cleaning, fueling)16%
- Air traffic control & airport congestion14%
- Security0%
Other airlines on ONT to SLC
- Delta Air Lines92% on time · 7 min avg delay
- SkyWest Airlines91% on time · 9 min avg delay
Full ONT to SLC comparison →
Frontier Airlines on-time record across all routes →
30 Frontier Airlines flights tracked on this route; 0 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.