OO4666
OO4666 (SkyWest Airlines) is a multi-stop service on 12 routes, busiest Casper to Denver. Of 604 departures recorded from October 2024 to July 2026, 82.7% left on time, according to the US BTS.
- On-time departures82.7%of 604 flights
- Average delay11.3 min
- July 20261▼ 96.8%vs July 2025
- Cancelled2.2%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 6 | ▼ 80.0% |
| July | 31 | 1 | ▼ 96.8% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 158 | ▼ 25.5% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 60.7% | 96.8% | ▲ 59.4% |
| February | 82.1% | 89.3% | ▲ 8.7% |
| March | 83.9% | 93.1% | ▲ 11.0% |
| April | 86.7% | 80.0% | ▼ 7.7% |
| May | 83.3% | 60.0% | ▼ 28.0% |
| June | 86.7% | 66.7% | ▼ 23.1% |
| July | 90.3% | 100.0% | ▲ 10.7% |
| August | 74.2% | – | – |
| September | 76.7% | – | – |
| October | 87.1% | – | in progress |
| November | 89.3% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.0% | 83.7% | ▲ 2.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 3 | ▼ 25.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 97.8% 591
- Cancelled 2.2% 13
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 4, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CPR DEN Casper-Natrona County International Airport – Denver International Airport | 370 | 7.6 min | 81.0% | 261 |
| DEN FCA Denver International Airport – Glacier Park International Airport | 1,210 | 3.0 min | 90.3% | 104 |
| ASE DEN Aspen-Pitkin County Airport (Sardy Field) – Denver International Airport | 201 | 16.2 min | 79.1% | 71 |
| BOI DEN Boise Air Terminal/Gowen Field – Denver International Airport | 1,042 | 13.8 min | 90.6% | 53 |
| IAH ASE George Bush Intercontinental Airport – Aspen-Pitkin County Airport (Sardy Field) | 1,470 | 39.6 min | 61.8% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 27 | 74.1% | 3 |
| December 2024 | 31 | 30 | 90.0% | 1 |
| January 2025 | 31 | 28 | 60.7% | 3 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 30 | 83.3% | 1 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 31 | 31 | 74.2% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 30 | 28 | 89.3% | 2 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 31 | 31 | 96.8% | 0 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 29 | 93.1% | 2 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 31 | 30 | 60.0% | 1 |
| June 2026 | 6 | 6 | 66.7% | 0 |
| July 2026 | 1 | 1 | 100.0% | 0 |