Southwest Airlines DEN to SAT on-time performance
Southwest Airlines nonstop flights from Denver to San Antonio · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
0.3%
4 flights
Avg arrival delay
16 min
51 min when late
Rank on route
#4 of 4
route average 77% on time
Key facts
- Southwest Airlines flights on DEN to SAT arrived on time 71% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 8% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (61%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft61%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion9%
- Extreme weather0%
- Security0%
Other airlines on DEN to SAT
- United Airlines83% on time · 13 min avg delay
- Frontier Airlines81% on time · 12 min avg delay
- SkyWest Airlines79% on time · 41 min avg delay
Full DEN to SAT comparison →
Southwest Airlines on-time record across all routes →
1,436 Southwest Airlines flights tracked on this route; 4 cancelled, 3 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.