Best Time to Fly DEN to RKS: On-Time Stats by Hour & Airline
Denver International → Southwest Wyoming Regional
Data through July 2026 · Last updated October 18, 2026
728 flights were scheduled from Denver (DEN) to Rock Springs (RKS) in the last 12 months, and 78.2% of those that flew arrived on time, 0.5 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (89% on time) and Monday the weakest day of the week (72%).
0.6% of flights were cancelled, versus 1.8% nationally.
DEN to RKS 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 | 78.2% | 91 min | 0.6% | 728 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to RKS
On-time arrival % by scheduled departure hour (local time), 1,457 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 2 | |
| 8am–9am | Limited data | 29 | |
| 11am–12pm | 73.2% | 0.0% | 84 |
| 12pm–1pm | 79.9% | 0.3% | 612 |
| 1pm–2pm | Limited data | 2 | |
| 8pm–9pm | 81.4% | 0.9% | 217 |
| 9pm–10pm | 72.9% | 1.8% | 511 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to RKS
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) | 85.0% | +6.1 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 67.6% | -11.3 pts | 1.2% | 248 |
| All other days | 78.9% | — | 0.9% | 1,123 |
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).