Best Time to Fly IDA to DEN: On-Time Stats by Hour & Airline
Idaho Falls Regional → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.9% of Idaho Falls (IDA) to Denver (DEN) flights arrived on time (1,699 scheduled flights). That is 3.2 points above the national average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 81.2% on time and United Airlines was last with 78.7%.
Over 24 months, Sunday was the most reliable day (81% on time) and July the worst month (64%).
The cancellation rate was 0.5% (US average 1.8%).
IDA 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 |
|---|---|---|---|---|
| SkyWest Airlines | 81.2% | 88 min | 0.6% | 1,475 |
| United Airlines | 78.7% | 118 min | 0.0% | 215 |
| Allegiant Air | Limited data | 9 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IDA to DEN
On-time arrival % by scheduled departure hour (local time), 3,288 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.1% | 0.0% | 214 |
| 6am–7am | 88.9% | 0.9% | 229 |
| 7am–8am | 83.1% | 0.4% | 500 |
| 8am–9am | Limited data | 12 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | 87.5% | 0.6% | 712 |
| 1pm–2pm | Limited data | 19 | |
| 2pm–3pm | 77.9% | 0.3% | 708 |
| 3pm–4pm | Limited data | 3 | |
| 4pm–5pm | 56.5% | 0.6% | 327 |
| 5pm–6pm | 71.0% | 2.5% | 488 |
| 6pm–7pm | 60.3% | 7.3% | 68 |
| 9pm–10pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IDA 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) | 75.9% | -5.9 pts | 0.0% | 58 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.3% | +4.5 pts | 2.2% | 134 |
| Summer peak (Jun 15 - Aug 15) | 67.4% | -14.4 pts | 1.2% | 663 |
| All other days | 81.8% | — | 0.7% | 2,433 |
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).