Best Time to Fly DSM to PHX: On-Time Stats by Hour & Airline
Des Moines International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.2% of Des Moines (DSM) to Phoenix (PHX) flights arrived on time (1,064 scheduled flights). That is 2.6 points above the national average of 77.6%.
Among 4 airlines, Envoy Air led with 93.6% on time and Southwest Airlines was last with 73.8%.
Over 24 months, Tuesday was the most reliable day (87% on time) and May the worst month (78%).
The cancellation rate was 1.5% (US average 1.8%).
DSM to PHX 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 | 93.6% | 36 min | 0.0% | 47 |
| SkyWest Airlines | 83.2% | 71 min | 1.2% | 320 |
| American Airlines | 79.1% | 174 min | 1.9% | 524 |
| Southwest Airlines | 73.8% | 59 min | 1.2% | 166 |
| Frontier Airlines | Limited data | 7 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DSM to PHX
On-time arrival % by scheduled departure hour (local time), 2,131 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.2% | 1.2% | 662 |
| 7am–8am | Limited data | 22 | |
| 8am–9am | 97.4% | 2.6% | 39 |
| 11am–12pm | 83.1% | 1.4% | 72 |
| 12pm–1pm | 91.9% | 2.3% | 88 |
| 1pm–2pm | 69.0% | 0.0% | 42 |
| 2pm–3pm | 81.3% | 0.8% | 643 |
| 3pm–4pm | 78.2% | 1.1% | 88 |
| 4pm–5pm | 72.6% | 0.0% | 62 |
| 5pm–6pm | Limited data | 27 | |
| 6pm–7pm | 83.4% | 1.6% | 381 |
| 7pm–8pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DSM to PHX
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) | 63.6% | -21.1 pts | 8.3% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.5% | -3.2 pts | 1.0% | 104 |
| Summer peak (Jun 15 - Aug 15) | 83.5% | -1.2 pts | 0.8% | 246 |
| All other days | 84.8% | — | 1.0% | 1,733 |
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).