Best Time to Fly SLC to HLN: On-Time Stats by Hour & Airline
Salt Lake City International → Helena Regional
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 95.7% of Salt Lake City (SLC) to Helena (HLN) flights arrived on time (725 scheduled flights). That is 18.1 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Sunday was the most reliable day (98% on time) and July the worst month (93%).
The cancellation rate was 0.3% (US average 1.8%).
SLC to HLN 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 | 95.7% | 44 min | 0.3% | 725 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to HLN
On-time arrival % by scheduled departure hour (local time), 1,450 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 10am–11am | 95.2% | 0.4% | 459 |
| 11am–12pm | 95.8% | 0.0% | 261 |
| 5pm–6pm | Limited data | 1 | |
| 8pm–9pm | 97.1% | 0.0% | 241 |
| 9pm–10pm | 97.3% | 0.2% | 488 |
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 HLN
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) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 94.2% | -2.6 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 94.3% | -2.5 pts | 0.0% | 248 |
| All other days | 96.9% | — | 0.3% | 1,124 |
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).