Best Time to Fly DEN to BTM: On-Time Stats by Hour & Airline
Denver International → Bert Mooney
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.7% of Denver (DEN) to Butte (BTM) flights arrived on time (365 scheduled flights). That is 4.9 points below 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 (81% on time) and June the worst month (47%).
The cancellation rate was 0.3% (US average 1.8%).
DEN to BTM 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 | 72.7% | 111 min | 0.3% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to BTM
On-time arrival % by scheduled departure hour (local time), 575 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 1pm–2pm | Limited data | 2 | |
| 8pm–9pm | 70.2% | 1.8% | 573 |
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 BTM
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 | 7 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 16 | ||
| Summer peak (Jun 15 - Aug 15) | 58.2% | -13.8 pts | 4.6% | 109 |
| All other days | 72.1% | — | 1.1% | 443 |
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).