Best Time to Fly DEN to HLN: On-Time Stats by Hour & Airline
Denver International → Helena Regional
Data through July 2026 · Last updated October 18, 2026
814 flights were scheduled from Denver (DEN) to Helena (HLN) in the last 12 months, and 80.0% of those that flew arrived on time, 2.3 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (90% on time) and Sunday the weakest day of the week (74%).
0.6% of flights were cancelled, versus 1.8% nationally.
DEN to HLN 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 | 80.0% | 68 min | 0.6% | 814 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to HLN
On-time arrival % by scheduled departure hour (local time), 1,612 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 11am–12pm | 81.0% | 0.5% | 665 |
| 12pm–1pm | 81.5% | 0.0% | 65 |
| 2pm–3pm | 76.5% | 0.7% | 155 |
| 7pm–8pm | 72.1% | 1.9% | 719 |
| 8pm–9pm | 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 DEN to HLN
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) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 91.7% | +12.7 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 64.7% | -14.3 pts | 1.9% | 307 |
| All other days | 79.0% | — | 1.0% | 1,219 |
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).