Frontier Airlines ONT to LAS on-time performance
Frontier Airlines nonstop flights from Ontario to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.5%
11 flights
Avg arrival delay
21 min
87 min when late
Rank on route
#1 of 2
route average 77% on time
Key facts
- Frontier Airlines flights on ONT to LAS arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 1.5% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (61%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft61%
- Air traffic control & airport congestion19%
- Airline (crew, maintenance, cleaning, fueling)18%
- Extreme weather1%
- Security0%
Other airlines on ONT to LAS
- Southwest Airlines77% on time · 12 min avg delay
Full ONT to LAS comparison →
Frontier Airlines on-time record across all routes →
728 Frontier Airlines flights tracked on this route; 11 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.