United Airlines CMH to SFO on-time performance
United Airlines nonstop flights from Columbus to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
64%
arrived < 15 min late
Cancelled
0.6%
2 flights
Avg arrival delay
31 min
82 min when late
Rank on route
#1 of 1
route average 64% on time
Key facts
- United Airlines flights on CMH to SFO arrived on time 64% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 17% arrived an hour or more late.
- That ranks #1 of 1 airlines on this route, which averaged 64% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (45%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion45%
- Airline (crew, maintenance, cleaning, fueling)37%
- Late-arriving aircraft14%
- Extreme weather4%
- Security0%
Other airlines on CMH to SFO
322 United Airlines flights tracked on this route; 2 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.