Frontier Airlines SFO to DEN on-time performance
Frontier Airlines nonstop flights from San Francisco to Denver · Aug 2025 – Jul 2026
On-time arrivals
70%
arrived < 15 min late
Cancelled
0.8%
5 flights
Avg arrival delay
19 min
61 min when late
Rank on route
#2 of 3
route average 75% on time
Key facts
- Frontier Airlines flights on SFO to DEN arrived on time 70% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 11% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (59%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft59%
- Airline (crew, maintenance, cleaning, fueling)26%
- Air traffic control & airport congestion15%
- Extreme weather0%
- Security0%
Other airlines on SFO to DEN
- United Airlines83% on time · 11 min avg delay
- Southwest Airlines60% on time · 25 min avg delay
Full SFO to DEN comparison →
Frontier Airlines on-time record across all routes →
638 Frontier Airlines flights tracked on this route; 5 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.