Cheyenne Regional/Jerry Olson Field (CYS) Delays and On-Time Departures
Cheyenne, WY · ranked 45th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Cheyenne (CYS) had 730 scheduled departures and 85.3% of them left on time (US average 77.4%).
That ranks 45th of 333 US airports tracked on this site, with 1.1% of departures cancelled.
Over 24 months, Tuesday was the most reliable day (90% on time) and February the worst month (73%).
Best time of day to fly out of Cheyenne (CYS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.1% | 0.0% | 72 |
| 6am–7am | 87.4% | 1.1% | 656 |
| 9am–10am | Limited data | 2 | |
| 11am–12pm | Limited data | 2 | |
| 1pm–2pm | 78.0% | 2.1% | 431 |
| 2pm–3pm | 88.1% | 0.7% | 271 |
| 3pm–4pm | Limited data | 10 | |
Airlines at CYS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 85.3% | 84.9% | 1.1% | 730 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of CYS
On-time departures by day, 24 months.
Best month to fly out of CYS
On-time departures by month, 24 months.
Holiday travel at Cheyenne (CYS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 27 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 89.7% | +4.6 pts | 0.0% | 58 |
| Summer peak (Jun 15 - Aug 15) | 82.1% | -3.0 pts | 1.9% | 256 |
| All other days | 85.0% | — | 1.2% | 1,103 |
Monthly on-time departure trend at CYS
On-time departure % each month, with the 12-month US average for reference.
Routes from Cheyenne (CYS)
Every route from CYS with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| CYS → Denver (DEN) | 84.9% | 1.1% | 730 |