DSM → LAS Southwest Airlines

Southwest Airlines · Des Moines, IA to Las Vegas, NV · 365 flights, 2025-07-01 to 2026-06-30 · aggregated across 24 flight numbers

This route runs much more reliably at some times of day than others — 91% on-time departing 9am–12pm vs. 53% departing 6–9pm.
On-time arrival
84%
Median delay
-7 min
90th percentile
+30 min
Cancellation rate
1%

How on-time is Southwest Airlines from DSM to LAS?

Across every Southwest Airlines flight number on DSM → LAS (365 flights, 2025-07-01 to 2026-06-30), 84% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +30 min or later. 1% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time30584%
16-30 min226%
31-60 min226%
61-120 min92%
2+ hrs51%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073080%+1 min
2025-083190%-4 min
2025-093093%-6 min
2025-103187%+6 min
2025-113093%-4 min
2025-123181%+11 min
2026-013184%-5 min
2026-022893%-6 min
2026-033080%+5 min
2026-043073%+7 min
2026-053181%+6 min
2026-063073%+4 min

Performance by day of week

DayFlightsOn-time
Mon5290%
Tue5383%
Wed5292%
Thu5182%
Fri5281%
Sat5281%
Sun5178%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…