Best Time to Fly SLC to MSO: On-Time Stats by Hour & Airline
Salt Lake City International → Missoula Montana
Data through July 2026 · Last updated October 18, 2026
1,059 flights were scheduled from Salt Lake City (SLC) to Missoula (MSO) in the last 12 months, and 88.9% of those that flew arrived on time, 11.3 points above the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 92.4% on time and Delta Air Lines was last with 84.5%.
Over 24 months, Thursday was the most reliable day (91% on time) and March the worst month (86%).
The cancellation rate was 0.9% (US average 1.8%).
SLC 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 | 92.4% | 41 min | 1.4% | 592 |
| Delta Air Lines | 84.5% | 98 min | 0.4% | 467 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to MSO
On-time arrival % by scheduled departure hour (local time), 2,131 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 92.8% | 0.0% | 253 |
| 10am–11am | 92.9% | 1.8% | 444 |
| 11am–12pm | Limited data | 27 | |
| 3pm–4pm | 89.5% | 0.3% | 318 |
| 4pm–5pm | 93.2% | 0.0% | 367 |
| 9pm–10pm | 87.0% | 0.6% | 162 |
| 10pm–11pm | 80.7% | 0.0% | 540 |
| 11pm–12am | Limited data | 20 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC 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) | 80.0% | -9.7 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 88.9% | -0.8 pts | 0.0% | 82 |
| Summer peak (Jun 15 - Aug 15) | 86.5% | -3.2 pts | 0.0% | 370 |
| All other days | 89.7% | — | 0.6% | 1,639 |
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).