Best Time to Fly HLN to DEN: On-Time Stats by Hour & Airline
Helena Regional → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.2% of Helena (HLN) to Denver (DEN) flights arrived on time (814 scheduled flights). That is 4.6 points above the national average of 77.6%.
SkyWest 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 0.5% (US average 1.8%).
HLN 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 | 82.2% | 106 min | 0.5% | 814 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HLN to DEN
On-time arrival % by scheduled departure hour (local time), 1,612 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 87.8% | 0.7% | 730 |
| 2pm–3pm | 71.4% | 0.7% | 727 |
| 5pm–6pm | 50.3% | 1.9% | 155 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HLN 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) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 88.3% | +9.0 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 65.1% | -14.2 pts | 1.6% | 307 |
| All other days | 79.3% | — | 0.7% | 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).