Best Time to Fly IND to DEN: On-Time Stats by Hour & Airline
Indianapolis International → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.6% of Indianapolis (IND) to Denver (DEN) flights arrived on time (2,494 scheduled flights). That is 1.0 points above the national average of 77.6%.
United Airlines was the most punctual of the 3 airlines on the route at 81.8%, while Southwest Airlines trailed at 76.8%.
September has been the best month (88% on time) and Sunday the weakest day of the week (78%).
0.5% of flights were cancelled, versus 1.8% nationally.
IND to DEN 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 |
|---|---|---|---|---|
| United Airlines | 81.8% | 68 min | 0.6% | 814 |
| Frontier Airlines | 78.3% | 73 min | 0.4% | 278 |
| Southwest Airlines | 76.8% | 50 min | 0.5% | 1,402 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IND to DEN
On-time arrival % by scheduled departure hour (local time), 5,054 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.4% | 0.7% | 136 |
| 6am–7am | 93.3% | 0.8% | 484 |
| 7am–8am | 90.1% | 0.9% | 112 |
| 8am–9am | 87.0% | 1.6% | 453 |
| 9am–10am | 85.3% | 0.4% | 493 |
| 10am–11am | 84.9% | 0.0% | 166 |
| 11am–12pm | 86.1% | 0.0% | 266 |
| 12pm–1pm | 88.8% | 1.1% | 91 |
| 1pm–2pm | 80.8% | 0.5% | 209 |
| 2pm–3pm | 87.5% | 0.0% | 129 |
| 3pm–4pm | 80.4% | 0.0% | 815 |
| 4pm–5pm | 70.2% | 0.0% | 285 |
| 5pm–6pm | 55.6% | 0.0% | 191 |
| 6pm–7pm | 67.5% | 0.6% | 360 |
| 7pm–8pm | 60.1% | 0.3% | 303 |
| 8pm–9pm | 73.1% | 0.7% | 446 |
| 9pm–10pm | 61.9% | 1.9% | 107 |
| 10pm–11pm | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IND to DEN
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) | 74.0% | -6.4 pts | 1.0% | 97 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.0% | -3.4 pts | 0.0% | 196 |
| Summer peak (Jun 15 - Aug 15) | 76.3% | -4.1 pts | 0.4% | 1,037 |
| All other days | 80.4% | — | 0.5% | 3,724 |
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).