OO5640
OO5640 (SkyWest Airlines) is a multi-stop service on 10 routes, busiest Milwaukee to Chicago. Of 617 departures recorded from October 2024 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 617 flights
- Average delay16.5 min
- July 202631▲ 6.9%vs July 2025
- Cancelled1.9%
- Legs flown under this number10
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 | 12 | 31 | ▲ 158.3% |
| April | 30 | 30 | 0.0% |
| May | 28 | 31 | ▲ 10.7% |
| June | 23 | 25 | ▲ 8.7% |
| July | 29 | 31 | ▲ 6.9% |
| August | 29 | – | – |
| September | 27 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 181 | 207 | ▲ 14.4% |
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 | 77.4% | 55.6% | ▼ 28.2% |
| February | 64.3% | 75.0% | ▲ 16.7% |
| March | 83.3% | 62.1% | ▼ 25.5% |
| April | 80.0% | 46.7% | ▼ 41.7% |
| May | 78.6% | 83.9% | ▲ 6.7% |
| June | 100.0% | 78.3% | ▼ 21.7% |
| July | 51.7% | 79.3% | ▲ 53.3% |
| August | 67.9% | – | – |
| September | 92.6% | – | – |
| October | 90.3% | – | in progress |
| November | 80.0% | – | – |
| December | 70.0% | – | – |
| Year-to-date average (Jan–Jul) | 76.5% | 68.7% | ▼ 10.2% |
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 | 0 | 4 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 0 | 2 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 10 |
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 98.1% 605
- Cancelled 1.9% 12
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MKE ORD General Mitchell International Airport – Chicago O'Hare International Airport | 108 | 19.2 min | 69.8% | 223 |
| MLI ORD Quad City International Airport – Chicago O'Hare International Airport | 224 | 16.2 min | 77.2% | 145 |
| PHX LAX Phoenix Sky Harbor International Airport – Los Angeles International Airport | 595 | -0.0 min | 93.2% | 88 |
| BZN DEN Bozeman Yellowstone International Airport – Denver International Airport | 844 | 27.8 min | 56.9% | 52 |
| ORD LEX Chicago O'Hare International Airport – Blue Grass Airport | 521 | 12.4 min | 84.0% | 50 |
| ORD TVC Chicago O'Hare International Airport – Cherry Capital Airport | 360 | 23.3 min | 79.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 31 | 31 | 67.7% | 0 |
| January 2025 | 31 | 31 | 77.4% | 0 |
| February 2025 | 28 | 28 | 64.3% | 0 |
| March 2025 | 12 | 12 | 83.3% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 28 | 28 | 78.6% | 0 |
| June 2025 | 23 | 23 | 100.0% | 0 |
| July 2025 | 29 | 29 | 51.7% | 0 |
| August 2025 | 29 | 28 | 67.9% | 1 |
| September 2025 | 27 | 27 | 92.6% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 30 | 80.0% | 0 |
| December 2025 | 31 | 30 | 70.0% | 1 |
| January 2026 | 31 | 27 | 55.6% | 4 |
| February 2026 | 28 | 28 | 75.0% | 0 |
| March 2026 | 31 | 29 | 62.1% | 2 |
| April 2026 | 30 | 30 | 46.7% | 0 |
| May 2026 | 31 | 31 | 83.9% | 0 |
| June 2026 | 25 | 23 | 78.3% | 2 |
| July 2026 | 31 | 29 | 79.3% | 2 |