Best Time to Fly RIW to DEN: On-Time Stats by Hour & Airline
Central Wyoming Regional → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.9% of Riverton/Lander (RIW) to Denver (DEN) flights arrived on time (728 scheduled flights). That is 5.3 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (92% on time) and Saturday the weakest day of the week (78%).
0.3% of flights were cancelled, versus 1.8% nationally.
RIW 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 | 82.9% | 148 min | 0.3% | 728 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly RIW 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 | 87.0% | 0.7% | 728 |
| 9am–10am | Limited data | 1 | |
| 1pm–2pm | 61.2% | 0.0% | 49 |
| 2pm–3pm | 79.7% | 0.4% | 679 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on RIW 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) | 91.7% | +8.0 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 75.6% | -8.0 pts | 0.8% | 248 |
| All other days | 83.7% | — | 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).