Best Time to Fly PHX to COS: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → City of Colorado Springs Municipal
Data through July 2026 · Last updated October 18, 2026
1,001 flights were scheduled from Phoenix (PHX) to Colorado Springs (COS) in the last 12 months, and 73.6% of those that flew arrived on time, 4.1 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (79% on time) and June the worst month (62%).
The cancellation rate was 0.1% (US average 1.8%).
PHX to COS 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 |
|---|---|---|---|---|
| Southwest Airlines | 73.6% | 48 min | 0.1% | 1,001 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to COS
On-time arrival % by scheduled departure hour (local time), 1,964 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 94.6% | 0.0% | 93 |
| 8am–9am | 88.1% | 0.0% | 227 |
| 9am–10am | 90.6% | 0.0% | 214 |
| 10am–11am | 84.8% | 1.7% | 60 |
| 11am–12pm | Limited data | 10 | |
| 12pm–1pm | 82.9% | 0.0% | 171 |
| 1pm–2pm | 76.2% | 0.0% | 106 |
| 2pm–3pm | 75.0% | 0.0% | 68 |
| 3pm–4pm | 70.9% | 0.0% | 203 |
| 4pm–5pm | 63.5% | 0.9% | 116 |
| 5pm–6pm | 91.1% | 0.0% | 45 |
| 6pm–7pm | 76.8% | 0.0% | 165 |
| 7pm–8pm | 64.1% | 1.3% | 159 |
| 8pm–9pm | 61.8% | 0.7% | 138 |
| 9pm–10pm | 71.6% | 0.0% | 141 |
| 10pm–11pm | 54.2% | 0.0% | 48 |
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 COS
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) | 66.7% | -13.5 pts | 0.0% | 39 |
| Christmas & New Year (Dec 20 - Jan 3) | 67.4% | -12.7 pts | 0.0% | 86 |
| Summer peak (Jun 15 - Aug 15) | 67.7% | -12.5 pts | 0.0% | 336 |
| All other days | 80.2% | — | 0.3% | 1,503 |
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).