YX4378
YX4378 (Republic Airways) is a multi-stop service on 8 routes, busiest New York to Raleigh. Of 803 departures recorded from October 2024 to July 2026, 86.7% left on time, according to the US BTS.
- On-time departures86.7%of 803 flights
- Average delay6.2 min
- July 202658▲ 87.1%vs July 2025
- Cancelled3.7%
- Legs flown under this number8
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 | 30 | ▼ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 31 | 47 | ▲ 51.6% |
| April | 30 | 58 | ▲ 93.3% |
| May | 31 | 60 | ▲ 93.5% |
| June | 30 | 56 | ▲ 86.7% |
| July | 31 | 58 | ▲ 87.1% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 212 | 337 | ▲ 59.0% |
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 | 93.6% | 88.5% | ▼ 5.4% |
| February | 92.3% | 92.0% | ▼ 0.3% |
| March | 93.6% | 78.7% | ▼ 15.9% |
| April | 96.7% | 89.7% | ▼ 7.3% |
| May | 100.0% | 73.3% | ▼ 26.7% |
| June | 86.7% | 76.6% | ▼ 11.6% |
| July | 83.3% | 60.0% | ▼ 28.0% |
| August | 96.8% | – | – |
| September | 93.3% | – | – |
| October | 96.8% | – | in progress |
| November | 88.9% | – | – |
| December | 81.5% | – | – |
| Year-to-date average (Jan–Jul) | 92.3% | 79.8% | ▼ 13.5% |
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 | 0 | 4 | – |
| February | 2 | 3 | ▲ 50.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 9 | – |
| July | 1 | 8 | ▲ 700.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 24 | ▲ 700.0% |
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 96.3% 773
- Cancelled 3.7% 30
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| JFK RDU John F. Kennedy International Airport – Raleigh-Durham International Airport | 686 | 0.0 min | 92.3% | 507 |
| LGA BUF LaGuardia Airport – Buffalo Niagara International Airport | 469 | 23.8 min | 67.7% | 72 |
| BUF LGA Buffalo Niagara International Airport – LaGuardia Airport | 469 | 55.4 min | 63.5% | 62 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | -3.1 min | 95.5% | 44 |
| BOS LGA Boston Logan International Airport – LaGuardia Airport | 296 | 5.0 min | 81.8% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 34 | 34 | 100.0% | 0 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 26 | 92.3% | 2 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 100.0% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 30 | 83.3% | 1 |
| August 2025 | 31 | 31 | 96.8% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 29 | 27 | 88.9% | 2 |
| December 2025 | 28 | 27 | 81.5% | 1 |
| January 2026 | 30 | 26 | 88.5% | 4 |
| February 2026 | 28 | 25 | 92.0% | 3 |
| March 2026 | 47 | 47 | 78.7% | 0 |
| April 2026 | 58 | 58 | 89.7% | 0 |
| May 2026 | 60 | 60 | 73.3% | 0 |
| June 2026 | 56 | 47 | 76.6% | 9 |
| July 2026 | 58 | 50 | 60.0% | 8 |