Southwest Airlines LAS to DEN on-time performance
Southwest Airlines nonstop flights from Las Vegas to Denver · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
1.0%
30 flights
Avg arrival delay
17 min
54 min when late
Rank on route
#3 of 3
route average 77% on time
Key facts
- Southwest Airlines flights on LAS to DEN arrived on time 71% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 9% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (40%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft40%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion24%
- Extreme weather6%
- Security0%
Other airlines on LAS to DEN
- United Airlines84% on time · 11 min avg delay
- Frontier Airlines78% on time · 21 min avg delay
Full LAS to DEN comparison →
Southwest Airlines on-time record across all routes →
3,119 Southwest Airlines flights tracked on this route; 30 cancelled, 10 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.