OO5139
OO5139 (SkyWest Airlines) is a multi-stop service on 15 routes, busiest Denver to West Yellowstone. Of 509 departures recorded from January 2025 to July 2026, 80.0% left on time, according to the US BTS.
- On-time departures80.0%of 509 flights
- Average delay15.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number15
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 31 | ▲ 14.8% |
| February | 12 | 23 | ▲ 91.7% |
| March | – | 27 | – |
| April | – | 24 | – |
| May | 26 | 31 | ▲ 19.2% |
| June | 30 | 50 | ▲ 66.7% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 25 | – | in progress |
| November | 50 | – | – |
| December | 30 | – | – |
according to the US BTS · January 2025 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 72.0% | 93.3% | ▲ 29.6% |
| February | 83.3% | 86.4% | ▲ 3.6% |
| March | – | 88.5% | – |
| April | – | 70.8% | – |
| May | 92.3% | 77.4% | ▼ 16.1% |
| June | 73.3% | 83.0% | ▲ 13.2% |
| July | 71.0% | 80.0% | ▲ 12.7% |
| August | 61.3% | – | – |
| September | 96.7% | – | – |
| October | 76.0% | – | in progress |
| November | 82.0% | – | – |
| December | 73.3% | – | – |
according to the US BTS · January 2025 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · January 2025 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 1 | – |
| March | – | 1 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 3 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · January 2025 → 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 98.2% 500
- Cancelled 1.8% 9
Share of all recorded flights in the period, all legs. · Jan 4, 2025 → Jul 31, 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 |
|---|---|---|---|---|
| DEN WYS Denver International Airport – Yellowstone Airport | 754 | 11.1 min | 78.5% | 163 |
| DEN JLN Denver International Airport – Joplin Regional Airport | 935 | 32.8 min | 91.7% | 37 |
| SLN ORD Salina Municipal Airport – Chicago O'Hare International Airport | 898 | 27.2 min | 74.3% | 36 |
| SGU DEN St George Regional Airport – Denver International Airport | 831 | 2.7 min | 86.1% | 36 |
| EAR ORD Kearney Regional Airport – Chicago O'Hare International Airport | 936 | 7.6 min | 81.3% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 27 | 25 | 72.0% | 2 |
| February 2025 | 12 | 12 | 83.3% | 0 |
| May 2025 | 26 | 26 | 92.3% | 0 |
| June 2025 | 30 | 30 | 73.3% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 31 | 31 | 61.3% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 25 | 25 | 76.0% | 0 |
| November 2025 | 50 | 50 | 82.0% | 0 |
| December 2025 | 30 | 30 | 73.3% | 0 |
| January 2026 | 31 | 30 | 93.3% | 1 |
| February 2026 | 23 | 22 | 86.4% | 1 |
| March 2026 | 27 | 26 | 88.5% | 1 |
| April 2026 | 24 | 24 | 70.8% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 50 | 47 | 83.0% | 3 |
| July 2026 | 31 | 30 | 80.0% | 1 |