Route
MSO → SLC
Missoula Montana Airport Salt Lake City International Airport
436 miles
Return route SLC → MSO →
How punctual is this route?
- On-time arrivals
- 91.2%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,059
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 46%
- Extreme weather 27%
- Late-arriving aircraft 17%
- Air traffic control & airport 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 98.6% | 74 |
| October 2025 | 93.5% | 92 |
| November 2025 | 92.7% | 88 |
| December 2025 | 90.9% | 90 |
| January 2026 | 89.7% | 87 |
| February 2026 | 89.7% | 78 |
| March 2026 | 83.3% | 92 |
| April 2026 | 85.4% | 90 |
| May 2026 | 92.5% | 93 |
| June 2026 | 98.9% | 90 |
| July 2026 | 92.3% | 92 |
| August 2026 | 88.2% | 93 |
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 |
|---|---|---|---|---|
| SkyWest Airlines | 592 | 91.8% | 1.4% | 63 min |
| Delta Air Lines | 467 | 90.5% | 0.4% | 99 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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