Route
DEN → MSO
Denver International Airport Missoula Montana Airport
How punctual is this route?
- On-time arrivals
- 81.5%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,198
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 36%
- Air traffic control & airport 17%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.7% | 97 |
| October 2025 | 89.3% | 122 |
| November 2025 | 89.9% | 91 |
| December 2025 | 66.3% | 94 |
| January 2026 | 76.9% | 93 |
| February 2026 | 84.3% | 83 |
| March 2026 | 75.3% | 93 |
| April 2026 | 87.8% | 90 |
| May 2026 | 88.0% | 93 |
| June 2026 | 70.8% | 96 |
| July 2026 | 86.8% | 122 |
| August 2026 | 72.6% | 124 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 717 | 79.2% | 0.1% | 58 min |
| SkyWest Airlines | 473 | 85.0% | 0.6% | 73 min |
| Frontier Airlines | 8 | 75.0% | 0.0% | 49 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1092
25% late · 336 flights
-
UA639
14% late · 120 flights
-
OO4783
16% late · 81 flights
-
OO5228
23% late · 81 flights
-
UA2357
17% late · 77 flights
-
OO4697
1% late · 68 flights
-
OO4667
11% late · 53 flights
-
OO5851
20% late · 52 flights
-
OO5706
12% late · 49 flights
-
OO5950
6% late · 49 flights
-
UA1342
13% late · 47 flights
-
UA510
25% late · 40 flights
-
UA705
29% late · 35 flights
-
OO5535
33% late · 21 flights
-
UA1166
10% late · 21 flights
-
UA507
19% late · 21 flights
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