YX4389
YX4389 (Republic Airways) is a multi-stop service on 21 routes, busiest Columbus to Boston. Of 961 departures recorded from October 2024 to July 2026, 84.9% left on time, according to the US BTS.
- On-time departures84.9%of 961 flights
- Average delay5.1 min
- July 202662▲ 520.0%vs July 2025
- Cancelled3.5%
- Legs flown under this number21
according to the US BTS · Oct 31, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 57 | 52 | ▼ 8.8% |
| February | 50 | 38 | ▼ 24.0% |
| March | 54 | 31 | ▼ 42.6% |
| April | 26 | 53 | ▲ 103.8% |
| May | 33 | 61 | ▲ 84.8% |
| June | 48 | 60 | ▲ 25.0% |
| July | 10 | 62 | ▲ 520.0% |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 57 | – | in progress |
| November | 60 | – | – |
| December | 46 | – | – |
| Year to date (Jan–Jul) | 278 | 357 | ▲ 28.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 94.6% | 83.3% | ▼ 11.9% |
| February | 81.3% | 91.7% | ▲ 12.8% |
| March | 90.7% | 80.7% | ▼ 11.1% |
| April | 100.0% | 76.0% | ▼ 24.0% |
| May | 50.0% | 88.3% | ▲ 76.7% |
| June | 85.4% | 80.4% | ▼ 5.9% |
| July | 90.0% | 72.0% | ▼ 20.0% |
| August | 80.8% | – | – |
| September | 72.4% | – | – |
| October | 93.0% | – | in progress |
| November | 80.0% | – | – |
| December | 86.4% | – | – |
| Year-to-date average (Jan–Jul) | 84.6% | 81.8% | ▼ 3.3% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 4 | ▲ 100.0% |
| February | 2 | 2 | 0.0% |
| March | 0 | 0 | – |
| April | 0 | 3 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 4 | – |
| July | 0 | 12 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 5 | 26 | ▲ 420.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 96.5% 927
- Cancelled 3.5% 34
Share of all recorded flights in the period, all legs. · Oct 31, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CMH BOS John Glenn Columbus International Airport – Boston Logan International Airport | 1,028 | 1.0 min | 87.7% | 297 |
| BOS CMH Boston Logan International Airport – John Glenn Columbus International Airport | 1,028 | -3.9 min | 94.1% | 261 |
| CLE JFK Cleveland Hopkins International Airport – John F. Kennedy International Airport | 682 | 33.1 min | 72.6% | 72 |
| JFK CLE John F. Kennedy International Airport – Cleveland Hopkins International Airport | 682 | 7.5 min | 86.2% | 71 |
| ORD CID Chicago O'Hare International Airport – The Eastern Iowa Airport | 315 | 7.5 min | 76.7% | 44 |
| CID ORD The Eastern Iowa Airport – Chicago O'Hare International Airport | 315 | 10.6 min | 80.5% | 44 |
| LGA CHS LaGuardia Airport – Charleston International Airport | 1,033 | 11.7 min | 75.0% | 33 |
| PHL BOS Philadelphia International Airport – Boston Logan International Airport | 450 | 37.6 min | 40.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 51 | 51 | 98.0% | 0 |
| December 2024 | 55 | 55 | 96.4% | 0 |
| January 2025 | 57 | 55 | 94.6% | 2 |
| February 2025 | 50 | 48 | 81.3% | 2 |
| March 2025 | 54 | 54 | 90.7% | 0 |
| April 2025 | 26 | 26 | 100.0% | 0 |
| May 2025 | 33 | 32 | 50.0% | 1 |
| June 2025 | 48 | 48 | 85.4% | 0 |
| July 2025 | 10 | 10 | 90.0% | 0 |
| August 2025 | 26 | 26 | 80.8% | 0 |
| September 2025 | 30 | 29 | 72.4% | 1 |
| October 2025 | 57 | 57 | 93.0% | 0 |
| November 2025 | 60 | 60 | 80.0% | 0 |
| December 2025 | 46 | 44 | 86.4% | 2 |
| January 2026 | 52 | 48 | 83.3% | 4 |
| February 2026 | 38 | 36 | 91.7% | 2 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 53 | 50 | 76.0% | 3 |
| May 2026 | 61 | 60 | 88.3% | 1 |
| June 2026 | 60 | 56 | 80.4% | 4 |
| July 2026 | 62 | 50 | 72.0% | 12 |