Best Time to Fly RKS to DEN: On-Time Stats by Hour & Airline
Southwest Wyoming Regional → Denver International
Data through July 2026 · Last updated October 18, 2026
728 flights were scheduled from Rock Springs (RKS) to Denver (DEN) in the last 12 months, and 81.8% of those that flew arrived on time, 4.2 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 July the worst month (77%).
The cancellation rate was 0.3% (US average 1.8%).
RKS 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 | 81.8% | 175 min | 0.3% | 728 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly RKS to DEN
On-time arrival % by scheduled departure hour (local time), 1,457 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 87.5% | 0.6% | 729 |
| 9am–10am | Limited data | 2 | |
| 10am–11am | Limited data | 29 | |
| 1pm–2pm | 72.3% | 1.0% | 208 |
| 2pm–3pm | 79.5% | 0.4% | 489 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on RKS 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 | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 86.7% | +3.4 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 78.7% | -4.6 pts | 0.8% | 248 |
| All other days | 83.2% | — | 0.5% | 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).