Best Time to Fly SUN to SLC: On-Time Stats by Hour & Airline
Friedman Memorial → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 94.2% of Sun Valley/Hailey/Ketchum (SUN) to Salt Lake City (SLC) flights arrived on time (1,078 scheduled flights). That is 16.6 points above the national 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 (97% on time) and February the worst month (90%).
The cancellation rate was 0.7% (US average 1.8%).
SUN 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 | 94.2% | 117 min | 0.7% | 1,078 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SUN to SLC
On-time arrival % by scheduled departure hour (local time), 2,026 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 97.2% | 0.7% | 728 |
| 12pm–1pm | 92.0% | 0.0% | 411 |
| 1pm–2pm | 91.9% | 1.0% | 314 |
| 3pm–4pm | 93.9% | 0.9% | 549 |
| 6pm–7pm | Limited data | 24 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SUN 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) | 96.7% | +1.9 pts | 3.2% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 90.1% | -4.6 pts | 0.0% | 81 |
| Summer peak (Jun 15 - Aug 15) | 93.0% | -1.8 pts | 0.0% | 357 |
| All other days | 94.8% | — | 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).