Best Time to Fly DEN to TUS: On-Time Stats by Hour & Airline
Denver International → Tucson International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.3% of Denver (DEN) to Tucson (TUS) flights arrived on time (2,729 scheduled flights). That is in line with the national average of 77.6%.
SkyWest Airlines was the most punctual of the 4 airlines on the route at 85.9%, while Southwest Airlines trailed at 70.9%.
November has been the best month (83% on time) and Friday the weakest day of the week (74%).
0.3% of flights were cancelled, versus 1.8% nationally.
DEN to TUS 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 |
|---|---|---|---|---|
| SkyWest Airlines | 85.9% | 64 min | 0.3% | 591 |
| Frontier Airlines | 81.2% | 49 min | 1.2% | 86 |
| United Airlines | 79.9% | 60 min | 0.1% | 866 |
| Southwest Airlines | 70.9% | 50 min | 0.3% | 1,186 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to TUS
On-time arrival % by scheduled departure hour (local time), 5,506 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 85.7% | 0.9% | 537 |
| 8am–9am | 92.5% | 0.3% | 363 |
| 9am–10am | 81.7% | 0.7% | 270 |
| 10am–11am | 84.1% | 0.0% | 44 |
| 11am–12pm | 85.7% | 0.0% | 763 |
| 12pm–1pm | 86.0% | 0.0% | 50 |
| 1pm–2pm | 83.2% | 0.2% | 536 |
| 2pm–3pm | 79.5% | 0.2% | 440 |
| 3pm–4pm | 77.5% | 0.0% | 425 |
| 4pm–5pm | 76.5% | 0.0% | 367 |
| 5pm–6pm | 58.0% | 0.0% | 162 |
| 6pm–7pm | 62.2% | 0.9% | 112 |
| 7pm–8pm | 69.2% | 0.3% | 754 |
| 8pm–9pm | 66.8% | 0.4% | 266 |
| 9pm–10pm | 62.7% | 0.5% | 218 |
| 10pm–11pm | 61.9% | 1.0% | 199 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to TUS
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) | 76.7% | -3.0 pts | 0.0% | 120 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.6% | -4.1 pts | 0.0% | 266 |
| Summer peak (Jun 15 - Aug 15) | 65.0% | -14.7 pts | 0.6% | 645 |
| All other days | 79.7% | — | 0.3% | 4,475 |
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).