YX4515
YX4515 (Republic Airways) is a multi-stop service on 17 routes, busiest New York to Dayton. Of 594 departures recorded from October 2024 to July 2026, 82.4% left on time, according to the US BTS.
- On-time departures82.4%of 594 flights
- Average delay11.3 min
- July 202660▲ 160.9%vs July 2025
- Cancelled4.2%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 31 | ▲ 14.8% |
| February | 26 | 39 | ▲ 50.0% |
| March | 26 | 33 | ▲ 26.9% |
| April | 26 | 29 | ▲ 11.5% |
| May | 26 | 20 | ▼ 23.1% |
| June | 22 | – | – |
| July | 23 | 60 | ▲ 160.9% |
| August | 21 | – | – |
| September | 29 | – | – |
| October | 27 | – | in progress |
| November | 24 | – | – |
| December | 28 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 92.6% | 89.3% | ▼ 3.6% |
| February | 88.5% | 61.1% | ▼ 30.9% |
| March | 88.5% | 81.3% | ▼ 8.2% |
| April | 92.0% | 75.9% | ▼ 17.5% |
| May | 70.8% | 85.0% | ▲ 20.0% |
| June | 76.5% | – | – |
| July | 52.9% | 91.7% | ▲ 73.2% |
| August | 85.0% | – | – |
| September | 89.7% | – | – |
| October | 74.1% | – | in progress |
| November | 72.7% | – | – |
| December | 70.4% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 3 | – |
| February | 0 | 3 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 2 | 0 | ▼ 100.0% |
| June | 5 | – | – |
| July | 6 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
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 95.8% 569
- Cancelled 4.2% 25
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LGA DAY LaGuardia Airport – James M. Cox Dayton International Airport | 882 | 5.8 min | 83.6% | 246 |
| CHS DCA Charleston International Airport – Ronald Reagan Washington National Airport | 715 | 20.0 min | 69.7% | 68 |
| CHS LGA Charleston International Airport – LaGuardia Airport | 1,033 | 12.9 min | 80.0% | 55 |
| DCA SDF Ronald Reagan Washington National Airport – Louisville Muhammad Ali International Airport | 760 | 25.0 min | 84.1% | 44 |
| PWM LGA Portland International Jetport – LaGuardia Airport | 433 | 15.7 min | 93.9% | 33 |
| ORD ALB Chicago O'Hare International Airport – Albany International Airport | 1,161 | 21.0 min | 71.0% | 33 |
| HHH DCA Hilton Head Airport – Ronald Reagan Washington National Airport | 808 | 14.8 min | 90.0% | 30 |
| DCA HHH Ronald Reagan Washington National Airport – Hilton Head Airport | 808 | 5.0 min | 93.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 26 | 26 | 100.0% | 0 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 27 | 27 | 92.6% | 0 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 26 | 26 | 88.5% | 0 |
| April 2025 | 26 | 25 | 92.0% | 1 |
| May 2025 | 26 | 24 | 70.8% | 2 |
| June 2025 | 22 | 17 | 76.5% | 5 |
| July 2025 | 23 | 17 | 52.9% | 6 |
| August 2025 | 21 | 20 | 85.0% | 1 |
| September 2025 | 29 | 29 | 89.7% | 0 |
| October 2025 | 27 | 27 | 74.1% | 0 |
| November 2025 | 24 | 22 | 72.7% | 2 |
| December 2025 | 28 | 27 | 70.4% | 1 |
| January 2026 | 31 | 28 | 89.3% | 3 |
| February 2026 | 39 | 36 | 61.1% | 3 |
| March 2026 | 33 | 32 | 81.3% | 1 |
| April 2026 | 29 | 29 | 75.9% | 0 |
| May 2026 | 20 | 20 | 85.0% | 0 |
| July 2026 | 60 | 60 | 91.7% | 0 |