YX4421
YX4421 (Republic Airways) is a multi-stop service on 21 routes, busiest Oklahoma City to Chicago. Of 792 departures recorded from October 2024 to July 2026, 78.6% left on time, according to the US BTS.
- On-time departures78.6%of 792 flights
- Average delay10.1 min
- July 202658▲ 7.4%vs July 2025
- Cancelled5.4%
- Legs flown under this number21
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 | 29 | 34 | ▲ 17.2% |
| February | 28 | 39 | ▲ 39.3% |
| March | 31 | 57 | ▲ 83.9% |
| April | 30 | 53 | ▲ 76.7% |
| May | 18 | 49 | ▲ 172.2% |
| June | 32 | 56 | ▲ 75.0% |
| July | 54 | 58 | ▲ 7.4% |
| August | 11 | – | – |
| September | 2 | – | – |
| October | 25 | – | in progress |
| November | 29 | – | – |
| December | 55 | – | – |
| Year to date (Jan–Jul) | 222 | 346 | ▲ 55.9% |
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 | 100.0% | 79.3% | ▼ 20.7% |
| February | 88.0% | 61.1% | ▼ 30.6% |
| March | 100.0% | 62.3% | ▼ 37.7% |
| April | 96.7% | 62.3% | ▼ 35.6% |
| May | 94.1% | 79.2% | ▼ 15.9% |
| June | 62.5% | 66.0% | ▲ 5.6% |
| July | 94.2% | 57.1% | ▼ 39.4% |
| August | 81.8% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 50.0% | – | – |
| December | 70.4% | – | – |
| Year-to-date average (Jan–Jul) | 90.8% | 66.8% | ▼ 26.5% |
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 | 5 | ▲ 400.0% |
| February | 3 | 3 | 0.0% |
| March | 0 | 4 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 6 | – |
| July | 2 | 9 | ▲ 350.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 7 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 7 | 28 | ▲ 300.0% |
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 94.6% 749
- Cancelled 5.4% 43
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
12Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 100.0% | 0 |
| November 2024 | 34 | 34 | 97.1% | 0 |
| December 2024 | 28 | 28 | 92.9% | 0 |
| January 2025 | 29 | 28 | 100.0% | 1 |
| February 2025 | 28 | 25 | 88.0% | 3 |
| March 2025 | 31 | 31 | 100.0% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 18 | 17 | 94.1% | 1 |
| June 2025 | 32 | 32 | 62.5% | 0 |
| July 2025 | 54 | 52 | 94.2% | 2 |
| August 2025 | 11 | 11 | 81.8% | 0 |
| September 2025 | 2 | 2 | 100.0% | 0 |
| October 2025 | 25 | 25 | 100.0% | 0 |
| November 2025 | 29 | 22 | 50.0% | 7 |
| December 2025 | 55 | 54 | 70.4% | 1 |
| January 2026 | 34 | 29 | 79.3% | 5 |
| February 2026 | 39 | 36 | 61.1% | 3 |
| March 2026 | 57 | 53 | 62.3% | 4 |
| April 2026 | 53 | 53 | 62.3% | 0 |
| May 2026 | 49 | 48 | 79.2% | 1 |
| June 2026 | 56 | 50 | 66.0% | 6 |
| July 2026 | 58 | 49 | 57.1% | 9 |