Best Time to Fly DEN to MSO: On-Time Stats by Hour & Airline
Denver International → Missoula Montana
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.0% of Denver (DEN) to Missoula (MSO) flights arrived on time (1,204 scheduled flights). That is 4.4 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 84.6%, while United Airlines trailed at 80.2%.
October has been the best month (91% on time) and Friday the weakest day of the week (77%).
0.3% of flights were cancelled, versus 1.8% nationally.
DEN to MSO 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 | 84.6% | 68 min | 0.6% | 473 |
| United Airlines | 80.2% | 53 min | 0.1% | 717 |
| Frontier Airlines | Limited data | 14 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to MSO
On-time arrival % by scheduled departure hour (local time), 2,400 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 92.9% | 1.1% | 186 |
| 9am–10am | Limited data | 30 | |
| 10am–11am | Limited data | 2 | |
| 11am–12pm | 85.7% | 0.3% | 722 |
| 12pm–1pm | Limited data | 10 | |
| 1pm–2pm | 81.5% | 0.7% | 557 |
| 2pm–3pm | 81.3% | 0.6% | 168 |
| 3pm–4pm | Limited data | 2 | |
| 4pm–5pm | Limited data | 2 | |
| 7pm–8pm | 75.4% | 0.1% | 721 |
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 MSO
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) | 72.5% | -10.8 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.9% | -2.4 pts | 0.0% | 90 |
| Summer peak (Jun 15 - Aug 15) | 77.9% | -5.4 pts | 0.6% | 499 |
| All other days | 83.3% | — | 0.4% | 1,771 |
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).