OO4670
OO4670 (SkyWest Airlines) is a multi-stop service on 11 routes, busiest Duluth to Chicago. Of 661 departures recorded from October 2024 to July 2026, 82.2% left on time, according to the US BTS.
- On-time departures82.2%of 661 flights
- Average delay16.4 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.4%
- Legs flown under this number11
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 | 29 | 30 | ▲ 3.4% |
| May | 31 | 41 | ▲ 32.3% |
| June | 30 | 54 | ▲ 80.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 211 | 246 | ▲ 16.6% |
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 | 70.0% | 71.0% | ▲ 1.4% |
| February | 89.3% | 96.4% | ▲ 8.0% |
| March | 76.7% | 70.4% | ▼ 8.2% |
| April | 89.3% | 48.3% | ▼ 45.9% |
| May | 96.8% | 87.8% | ▼ 9.3% |
| June | 93.3% | 92.6% | ▼ 0.8% |
| July | 86.7% | 85.7% | ▼ 1.1% |
| August | 74.2% | – | – |
| September | 86.2% | – | – |
| October | 90.3% | – | in progress |
| November | 89.7% | – | – |
| December | 65.5% | – | – |
| Year-to-date average (Jan–Jul) | 86.0% | 78.9% | ▼ 8.3% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 4 | ▲ 300.0% |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 3 | ▲ 200.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 4 | 8 | ▲ 100.0% |
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 97.6% 645
- Cancelled 2.4% 16
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DLH ORD Duluth International Airport – Chicago O'Hare International Airport | 639 | 16.5 min | 84.6% | 534 |
| ORD SDF Chicago O'Hare International Airport – Louisville Muhammad Ali International Airport | 462 | 0.4 min | 88.2% | 34 |
| ATW ORD Appleton International Airport – Chicago O'Hare International Airport | 258 | 37.6 min | 48.4% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 3 | 3 | 33.3% | 0 |
| December 2024 | 28 | 28 | 71.4% | 0 |
| January 2025 | 31 | 30 | 70.0% | 1 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 30 | 76.7% | 1 |
| April 2025 | 29 | 28 | 89.3% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 31 | 30 | 86.7% | 1 |
| August 2025 | 31 | 31 | 74.2% | 0 |
| September 2025 | 30 | 29 | 86.2% | 1 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 29 | 89.7% | 1 |
| December 2025 | 31 | 29 | 65.5% | 2 |
| January 2026 | 31 | 31 | 71.0% | 0 |
| February 2026 | 28 | 28 | 96.4% | 0 |
| March 2026 | 31 | 27 | 70.4% | 4 |
| April 2026 | 30 | 29 | 48.3% | 1 |
| May 2026 | 41 | 41 | 87.8% | 0 |
| June 2026 | 54 | 54 | 92.6% | 0 |
| July 2026 | 31 | 28 | 85.7% | 3 |