Frontier Airlines DEN to SAT on-time performance
Frontier Airlines nonstop flights from Denver to San Antonio · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.3%
1 flights
Avg arrival delay
12 min
60 min when late
Rank on route
#2 of 4
route average 77% on time
Key facts
- Frontier Airlines flights on DEN to SAT arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 5% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (47%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft47%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion15%
- Extreme weather9%
- Security0%
Other airlines on DEN to SAT
- Southwest Airlines71% on time · 16 min avg delay
- United Airlines83% on time · 13 min avg delay
- SkyWest Airlines79% on time · 41 min avg delay
Full DEN to SAT comparison →
Frontier Airlines on-time record across all routes →
385 Frontier Airlines flights tracked on this route; 1 cancelled, 1 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.