Best Time to Fly LAS to DSM: On-Time Stats by Hour & Airline
Harry Reid International → Des Moines International
Data through July 2026 · Last updated October 18, 2026
595 flights were scheduled from Las Vegas (LAS) to Des Moines (DSM) in the last 12 months, and 78.8% of those that flew arrived on time, 1.2 points above the US average of 77.6%.
Among 2 airlines, Allegiant Air led with 81.5% on time and Southwest Airlines was last with 77.1%.
Over 24 months, Tuesday was the most reliable day (88% on time) and May the worst month (70%).
The cancellation rate was 0.3% (US average 1.8%).
LAS to DSM on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Allegiant Air | 81.5% | 129 min | 0.0% | 230 |
| Southwest Airlines | 77.1% | 37 min | 0.6% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to DSM
On-time arrival % by scheduled departure hour (local time), 1,189 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 8 | |
| 7am–8am | 93.0% | 0.0% | 43 |
| 8am–9am | 90.3% | 3.1% | 32 |
| 9am–10am | 88.8% | 0.0% | 81 |
| 10am–11am | 86.0% | 0.4% | 230 |
| 11am–12pm | 78.4% | 0.0% | 149 |
| 12pm–1pm | 75.2% | 0.0% | 157 |
| 1pm–2pm | 78.0% | 0.6% | 160 |
| 2pm–3pm | Limited data | 20 | |
| 3pm–4pm | 73.8% | 2.3% | 43 |
| 4pm–5pm | 68.4% | 0.0% | 117 |
| 5pm–6pm | 73.6% | 0.7% | 145 |
| 6pm–7pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to DSM
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 22 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 82.3% | +3.1 pts | 1.9% | 52 |
| Summer peak (Jun 15 - Aug 15) | 80.5% | +1.3 pts | 0.5% | 211 |
| All other days | 79.2% | — | 0.3% | 904 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).