Frontier Airlines LAS to ONT on-time performance
Frontier Airlines nonstop flights from Las Vegas to Ontario · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
1.0%
7 flights
Avg arrival delay
15 min
75 min when late
Rank on route
#1 of 2
route average 76% on time
Key facts
- Frontier Airlines flights on LAS to ONT arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (53%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft53%
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion8%
- Extreme weather2%
- Security0%
Other airlines on LAS to ONT
- Southwest Airlines73% on time · 14 min avg delay
Full LAS to ONT comparison →
Frontier Airlines on-time record across all routes →
727 Frontier Airlines flights tracked on this route; 7 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.