YX4404
YX4404 (Republic Airways) is a multi-stop service on 28 routes, busiest New York to Charleston. Of 519 departures recorded from October 2024 to July 2026, 76.0% left on time, according to the US BTS.
- On-time departures76.0%of 519 flights
- Average delay14.7 min
- July 202635▼ 23.9%vs July 2025
- Cancelled4.6%
- Legs flown under this number28
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 | 9 | 34 | ▲ 277.8% |
| February | 23 | 28 | ▲ 21.7% |
| March | 27 | 31 | ▲ 14.8% |
| April | 29 | 30 | ▲ 3.4% |
| May | 27 | 29 | ▲ 7.4% |
| June | 16 | 26 | ▲ 62.5% |
| July | 46 | 35 | ▼ 23.9% |
| August | 9 | – | – |
| September | 1 | – | – |
| October | 3 | – | in progress |
| November | 30 | – | – |
| December | 44 | – | – |
| Year to date (Jan–Jul) | 177 | 213 | ▲ 20.3% |
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% | 64.5% | ▼ 35.5% |
| February | 95.7% | 73.1% | ▼ 23.6% |
| March | 96.3% | 96.7% | ▲ 0.4% |
| April | 86.2% | 86.7% | ▲ 0.5% |
| May | 96.3% | 75.9% | ▼ 21.2% |
| June | 73.3% | 54.2% | ▼ 26.1% |
| July | 62.5% | 44.8% | ▼ 28.3% |
| August | 55.6% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 60.7% | – | – |
| December | 65.1% | – | – |
| Year-to-date average (Jan–Jul) | 87.2% | 70.8% | ▼ 18.8% |
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 | 3 | – |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 2 | ▲ 100.0% |
| July | 6 | 6 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 7 | 14 | ▲ 100.0% |
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 95.4% 495
- Cancelled 4.6% 24
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LGA CHS LaGuardia Airport – Charleston International Airport | 1,033 | 5.1 min | 80.8% | 81 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | 46.3 min | 45.5% | 62 |
| MEM ORD Frederick W. Smith International Airport – Chicago O'Hare International Airport | 792 | 2.6 min | 94.6% | 56 |
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 14.4 min | 75.0% | 44 |
| LGA MSN LaGuardia Airport – Dane County Regional Truax Field | 1,304 | 23.0 min | 60.7% | 31 |
| DCA BOS Ronald Reagan Washington National Airport – Boston Logan International Airport | 641 | -4.4 min | 100.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 93.8% | 0 |
| November 2024 | 7 | 7 | 85.7% | 0 |
| December 2024 | 19 | 19 | 79.0% | 0 |
| January 2025 | 9 | 9 | 100.0% | 0 |
| February 2025 | 23 | 23 | 95.7% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 29 | 29 | 86.2% | 0 |
| May 2025 | 27 | 27 | 96.3% | 0 |
| June 2025 | 16 | 15 | 73.3% | 1 |
| July 2025 | 46 | 40 | 62.5% | 6 |
| August 2025 | 9 | 9 | 55.6% | 0 |
| September 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 3 | 3 | 100.0% | 0 |
| November 2025 | 30 | 28 | 60.7% | 2 |
| December 2025 | 44 | 43 | 65.1% | 1 |
| January 2026 | 34 | 31 | 64.5% | 3 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 31 | 30 | 96.7% | 1 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 29 | 29 | 75.9% | 0 |
| June 2026 | 26 | 24 | 54.2% | 2 |
| July 2026 | 35 | 29 | 44.8% | 6 |