Best Time to Fly SUN to DEN: On-Time Stats by Hour & Airline
Friedman Memorial → Denver International
Data through July 2026 · Last updated October 18, 2026
630 flights were scheduled from Sun Valley/Hailey/Ketchum (SUN) to Denver (DEN) in the last 12 months, and 85.0% of those that flew arrived on time, 7.4 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (88% on time) and May the worst month (74%).
The cancellation rate was 0.0% (US average 1.8%).
SUN to DEN 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 | 85.0% | 117 min | 0.0% | 630 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SUN to DEN
On-time arrival % by scheduled departure hour (local time), 1,230 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | 90.0% | 0.4% | 501 |
| 10am–11am | Limited data | 4 | |
| 2pm–3pm | 80.5% | 0.4% | 724 |
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 DEN
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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 93.3% | +8.3 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 79.8% | -5.3 pts | 0.0% | 247 |
| All other days | 85.0% | — | 0.6% | 909 |
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).