Best Time to Fly HLN to SLC: On-Time Stats by Hour & Airline
Helena Regional → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
725 flights were scheduled from Helena (HLN) to Salt Lake City (SLC) in the last 12 months, and 95.3% of those that flew arrived on time, 17.7 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 (98% on time) and November the worst month (93%).
The cancellation rate was 0.3% (US average 1.8%).
HLN 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 | 95.3% | 69 min | 0.3% | 725 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HLN to SLC
On-time arrival % by scheduled departure hour (local time), 1,450 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.2% | 0.2% | 620 |
| 6am–7am | 100.0% | 0.0% | 102 |
| 7am–8am | Limited data | 8 | |
| 12pm–1pm | Limited data | 25 | |
| 1pm–2pm | 94.9% | 0.4% | 695 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HLN 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) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 92.3% | -4.2 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 94.3% | -2.2 pts | 0.0% | 248 |
| All other days | 96.5% | — | 0.4% | 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).