Southwest Airlines DEN to LAS on-time performance
Southwest Airlines nonstop flights from Denver to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
72%
arrived < 15 min late
Cancelled
0.7%
21 flights
Avg arrival delay
17 min
56 min when late
Rank on route
#3 of 3
route average 76% on time
Key facts
- Southwest Airlines flights on DEN to LAS arrived on time 72% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 9% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (51%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion18%
- Extreme weather1%
- Security0%
Other airlines on DEN to LAS
- United Airlines80% on time · 14 min avg delay
- Frontier Airlines76% on time · 19 min avg delay
Full DEN to LAS comparison →
Southwest Airlines on-time record across all routes →
3,143 Southwest Airlines flights tracked on this route; 21 cancelled, 5 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.