Best Time to Fly SLC to SUN: On-Time Stats by Hour & Airline
Salt Lake City International → Friedman Memorial
Data through July 2026 · Last updated October 18, 2026
1,078 flights were scheduled from Salt Lake City (SLC) to Sun Valley/Hailey/Ketchum (SUN) in the last 12 months, and 93.2% of those that flew arrived on time, 15.6 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
May has been the best month (97% on time) and Saturday the weakest day of the week (91%).
0.7% of flights were cancelled, versus 1.8% nationally.
SLC to SUN 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 | 93.2% | 55 min | 0.7% | 1,078 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to SUN
On-time arrival % by scheduled departure hour (local time), 2,026 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 10am–11am | 92.8% | 0.0% | 352 |
| 11am–12pm | 93.5% | 0.8% | 373 |
| 1pm–2pm | 91.5% | 0.9% | 549 |
| 3pm–4pm | Limited data | 2 | |
| 4pm–5pm | Limited data | 24 | |
| 8pm–9pm | 97.5% | 0.6% | 516 |
| 9pm–10pm | 97.1% | 0.9% | 210 |
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 SUN
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) | 83.3% | -11.2 pts | 3.2% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 95.0% | +0.5 pts | 0.0% | 81 |
| Summer peak (Jun 15 - Aug 15) | 92.9% | -1.6 pts | 0.0% | 357 |
| All other days | 94.5% | — | 0.8% | 1,557 |
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).