Southwest Airlines DEN to TUS on-time performance
Southwest Airlines nonstop flights from Denver to Tucson · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
0.3%
4 flights
Avg arrival delay
16 min
50 min when late
Rank on route
#4 of 4
route average 77% on time
Key facts
- Southwest Airlines flights on DEN to TUS 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 (57%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft57%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion9%
- Extreme weather1%
- Security0%
Other airlines on DEN to TUS
- United Airlines80% on time · 13 min avg delay
- SkyWest Airlines86% on time · 10 min avg delay
- Frontier Airlines81% on time · 11 min avg delay
Full DEN to TUS comparison →
Southwest Airlines on-time record across all routes →
1,186 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.