Best Time to Fly PHX to DSM: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → Des Moines International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.8% of Phoenix (PHX) to Des Moines (DSM) flights arrived on time (1,067 scheduled flights). That is 0.8 points below the national average of 77.6%.
Among 4 airlines, Envoy Air led with 79.2% on time and Southwest Airlines was last with 72.0%.
Over 24 months, Wednesday was the most reliable day (86% on time) and July the worst month (68%).
The cancellation rate was 1.5% (US average 1.8%).
PHX 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 |
|---|---|---|---|---|
| Envoy Air | 79.2% | 46 min | 0.0% | 48 |
| SkyWest Airlines | 79.1% | 49 min | 1.6% | 322 |
| American Airlines | 76.8% | 60 min | 1.9% | 524 |
| Southwest Airlines | 72.0% | 42 min | 0.6% | 166 |
| Frontier Airlines | Limited data | 7 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to DSM
On-time arrival % by scheduled departure hour (local time), 2,136 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 84.4% | 0.5% | 395 |
| 9am–10am | 87.8% | 0.9% | 323 |
| 10am–11am | 88.5% | 1.9% | 53 |
| 11am–12pm | 78.1% | 0.6% | 161 |
| 12pm–1pm | 84.4% | 0.8% | 259 |
| 1pm–2pm | 86.6% | 1.3% | 235 |
| 2pm–3pm | 75.7% | 0.0% | 37 |
| 3pm–4pm | Limited data | 28 | |
| 4pm–5pm | 75.9% | 3.6% | 56 |
| 5pm–6pm | Limited data | 8 | |
| 6pm–7pm | 58.5% | 1.5% | 67 |
| 7pm–8pm | 77.2% | 1.1% | 378 |
| 8pm–9pm | 71.0% | 3.0% | 135 |
| 11pm–12am | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX 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) | 68.9% | -13.7 pts | 6.2% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 88.2% | +5.7 pts | 1.9% | 104 |
| Summer peak (Jun 15 - Aug 15) | 73.7% | -8.9 pts | 0.4% | 246 |
| All other days | 82.6% | — | 1.0% | 1,738 |
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).