Southwest Airlines DSM to LAS on-time performance
Southwest Airlines nonstop flights from Des Moines to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
85%
arrived < 15 min late
Cancelled
0.3%
1 flights
Avg arrival delay
10 min
58 min when late
Rank on route
#1 of 2
route average 81% on time
Key facts
- Southwest Airlines flights on DSM to LAS arrived on time 85% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 81% 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)28%
- Air traffic control & airport congestion21%
- Extreme weather10%
- Security1%
Other airlines on DSM to LAS
- Allegiant Air75% on time · 35 min avg delay
Full DSM to LAS comparison →
Southwest Airlines on-time record across all routes →
365 Southwest Airlines flights tracked on this route; 1 cancelled, 0 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.