Best Time to Fly GTF to SLC: On-Time Stats by Hour & Airline
Great Falls International → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
1,071 flights were scheduled from Great Falls (GTF) to Salt Lake City (SLC) in the last 12 months, and 92.5% of those that flew arrived on time, 14.8 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (96% on time) and November the worst month (89%).
The cancellation rate was 0.8% (US average 1.8%).
GTF to SLC 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 | 92.5% | 76 min | 0.8% | 1,071 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GTF to SLC
On-time arrival % by scheduled departure hour (local time), 2,108 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.0% | 0.1% | 729 |
| 7am–8am | Limited data | 1 | |
| 11am–12pm | 92.0% | 0.0% | 326 |
| 12pm–1pm | 97.0% | 0.0% | 66 |
| 1pm–2pm | 92.2% | 1.5% | 336 |
| 6pm–7pm | 90.0% | 0.3% | 650 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GTF to SLC
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) | 86.8% | -5.7 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 96.2% | +3.7 pts | 0.0% | 80 |
| Summer peak (Jun 15 - Aug 15) | 94.6% | +2.0 pts | 0.0% | 368 |
| All other days | 92.6% | — | 0.5% | 1,622 |
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).