United Airlines SFO to DEN on-time performance
United Airlines nonstop flights from San Francisco to Denver · Aug 2025 – Jul 2026
On-time arrivals
83%
arrived < 15 min late
Cancelled
0.2%
6 flights
Avg arrival delay
11 min
58 min when late
Rank on route
#1 of 3
route average 75% on time
Key facts
- United Airlines flights on SFO to DEN arrived on time 83% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (46%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion27%
- Extreme weather0%
- Security0%
Other airlines on SFO to DEN
- Southwest Airlines60% on time · 25 min avg delay
- Frontier Airlines70% on time · 19 min avg delay
Full SFO to DEN comparison →
United Airlines on-time record across all routes →
3,410 United Airlines flights tracked on this route; 6 cancelled, 8 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.