YX4615
YX4615 (Republic Airways) is a multi-stop service on 13 routes, busiest Louisville to New York. Of 558 departures recorded from October 2024 to July 2026, 85.2% left on time, according to the US BTS.
- On-time departures85.2%of 558 flights
- Average delay8.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled3.1%
- Legs flown under this number13
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 | 30 | 36 | ▲ 20.0% |
| February | 26 | 27 | ▲ 3.8% |
| March | 26 | 10 | ▼ 61.5% |
| April | 30 | 29 | ▼ 3.3% |
| May | 28 | 31 | ▲ 10.7% |
| June | 29 | 30 | ▲ 3.4% |
| July | 31 | 31 | 0.0% |
| August | 27 | – | – |
| September | 2 | – | – |
| October | 2 | – | in progress |
| November | 19 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 200 | 194 | ▼ 3.0% |
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 | 89.7% | 75.0% | ▼ 16.4% |
| February | 88.5% | 91.7% | ▲ 3.6% |
| March | 96.2% | 100.0% | ▲ 4.0% |
| April | 90.0% | 89.3% | ▼ 0.8% |
| May | 96.4% | 96.8% | ▲ 0.4% |
| June | 89.7% | 71.4% | ▼ 20.3% |
| July | 86.7% | 81.5% | ▼ 6.0% |
| August | 92.6% | – | – |
| September | 100.0% | – | – |
| October | 50.0% | – | in progress |
| November | 66.7% | – | – |
| December | 48.8% | – | – |
| Year-to-date average (Jan–Jul) | 91.0% | 86.5% | ▼ 4.9% |
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 | 4 | ▲ 300.0% |
| February | 0 | 3 | – |
| March | 0 | 0 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 1 | 4 | ▲ 300.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 14 | ▲ 600.0% |
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 97.0% 541
- Cancelled 3.0% 17
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SDF LGA Louisville Muhammad Ali International Airport – LaGuardia Airport | 1,058 | 3.5 min | 92.0% | 300 |
| CVG BOS Cincinnati Northern Kentucky International Airport – Boston Logan International Airport | 1,207 | 15.6 min | 73.4% | 69 |
| TVC ORD Cherry Capital Airport – Chicago O'Hare International Airport | 360 | -2.9 min | 95.4% | 44 |
| ORD RDU Chicago O'Hare International Airport – Raleigh-Durham International Airport | 1,039 | 7.2 min | 87.5% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 28 | 28 | 96.4% | 0 |
| December 2024 | 26 | 26 | 92.3% | 0 |
| January 2025 | 30 | 29 | 89.7% | 1 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 26 | 26 | 96.2% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 28 | 28 | 96.4% | 0 |
| June 2025 | 29 | 29 | 89.7% | 0 |
| July 2025 | 31 | 30 | 86.7% | 1 |
| August 2025 | 27 | 27 | 92.6% | 0 |
| September 2025 | 2 | 2 | 100.0% | 0 |
| October 2025 | 2 | 2 | 50.0% | 0 |
| November 2025 | 19 | 18 | 66.7% | 1 |
| December 2025 | 43 | 43 | 48.8% | 0 |
| January 2026 | 36 | 32 | 75.0% | 4 |
| February 2026 | 27 | 24 | 91.7% | 3 |
| March 2026 | 10 | 10 | 100.0% | 0 |
| April 2026 | 29 | 28 | 89.3% | 1 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 30 | 28 | 71.4% | 2 |
| July 2026 | 31 | 27 | 81.5% | 4 |