SkyWest Airlines SFO to STL on-time performance
SkyWest Airlines nonstop flights from San Francisco to St. Louis · Aug 2025 – Jul 2026Regional airline operating flights for United Express, Delta Connection, American Eagle and Alaska.
On-time arrivals
78%
arrived < 15 min late
Cancelled
2.6%
6 flights
Avg arrival delay
20 min
85 min when late
Rank on route
#2 of 3
route average 64% on time
Key facts
- SkyWest Airlines flights on SFO to STL arrived on time 78% of the time in Aug 2025 – Jul 2026.
- 2.6% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 64% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion35%
- Late-arriving aircraft27%
- Extreme weather1%
- Security0%
Other airlines on SFO to STL
- Southwest Airlines45% on time · 34 min avg delay
- United Airlines82% on time · 11 min avg delay
Full SFO to STL comparison →
SkyWest Airlines on-time record across all routes →
235 SkyWest Airlines flights tracked on this route; 6 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.