Route
MSO → DEN
Missoula Montana Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 81.1%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 100 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,198
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 37%
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 19%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.4% | 97 |
| October 2025 | 79.3% | 122 |
| November 2025 | 91.0% | 91 |
| December 2025 | 75.0% | 94 |
| January 2026 | 82.4% | 93 |
| February 2026 | 90.4% | 83 |
| March 2026 | 81.7% | 93 |
| April 2026 | 91.1% | 90 |
| May 2026 | 81.7% | 93 |
| June 2026 | 80.2% | 96 |
| July 2026 | 76.7% | 122 |
| August 2026 | 71.3% | 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 | 83.1% | 0.3% | 97 min |
| SkyWest Airlines | 473 | 78.0% | 1.1% | 104 min |
| Frontier Airlines | 8 | 87.5% | 0.0% | 61 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1436
25% late · 272 flights
-
UA1026
8% late · 200 flights
-
OO5500
22% late · 109 flights
-
UA2045
9% late · 103 flights
-
OO4700
16% late · 77 flights
-
OO5484
4% late · 68 flights
-
OO5654
14% late · 49 flights
-
OO5922
29% late · 49 flights
-
OO5632
42% late · 40 flights
-
UA1460
8% late · 37 flights
-
UA2338
17% late · 37 flights
-
UA1898
29% late · 32 flights
-
OO5607
29% late · 24 flights
-
OO5849
50% late · 21 flights
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