Southwest Airlines SAT to DEN on-time performance
Southwest Airlines nonstop flights from San Antonio to Denver · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.2%
3 flights
Avg arrival delay
11 min
52 min when late
Rank on route
#3 of 4
route average 82% on time
Key facts
- Southwest Airlines flights on SAT to DEN arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 5% arrived an hour or more late.
- That ranks #3 of 4 airlines on this route, which averaged 82% on time overall.
- The largest source of delay minutes was late-arriving aircraft (52%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft52%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)17%
- Extreme weather2%
- Security0%
Other airlines on SAT to DEN
- United Airlines83% on time · 15 min avg delay
- Frontier Airlines81% on time · 18 min avg delay
- SkyWest Airlines89% on time · 19 min avg delay
Full SAT to DEN comparison →
Southwest Airlines on-time record across all routes →
1,434 Southwest Airlines flights tracked on this route; 3 cancelled, 4 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.