Frontier Airlines DEN to SAN on-time performance
Frontier Airlines nonstop flights from Denver to San Diego · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
1.0%
7 flights
Avg arrival delay
14 min
65 min when late
Rank on route
#2 of 5
route average 75% on time
Key facts
- Frontier Airlines flights on DEN to SAN arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 5 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (38%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion33%
- Late-arriving aircraft28%
- Extreme weather1%
- Security0%
Other airlines on DEN to SAN
- Southwest Airlines69% on time · 18 min avg delay
- United Airlines80% on time · 12 min avg delay
- Alaska Airlines84% on time · 10 min avg delay
- SkyWest Airlines71% on time · 14 min avg delay
Full DEN to SAN comparison →
Frontier Airlines on-time record across all routes →
704 Frontier Airlines flights tracked on this route; 7 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.