YX4566
YX4566 (Republic Airways) is a multi-stop service on 7 routes, busiest Boston to New York. Of 534 departures recorded from October 2024 to July 2026, 90.8% left on time, according to the US BTS.
- On-time departures90.8%of 534 flights
- Average delay2.4 min
- July 20268▼ 73.3%vs July 2025
- Cancelled2.4%
- Legs flown under this number7
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 | 20 | 9 | ▼ 55.0% |
| February | 24 | 18 | ▼ 25.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 20 | ▼ 35.5% |
| June | 30 | 4 | ▼ 86.7% |
| July | 30 | 8 | ▼ 73.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 25 | – | – |
| Year to date (Jan–Jul) | 196 | 120 | ▼ 38.8% |
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 | 93.8% | 88.9% | ▼ 5.2% |
| February | 65.2% | 87.5% | ▲ 34.2% |
| March | 96.8% | 93.3% | ▼ 3.6% |
| April | 96.7% | 96.7% | 0.0% |
| May | 90.3% | 100.0% | ▲ 10.7% |
| June | 80.0% | 100.0% | ▲ 25.0% |
| July | 65.5% | 83.3% | ▲ 27.2% |
| August | 100.0% | – | – |
| September | 93.3% | – | – |
| October | 93.6% | – | in progress |
| November | 93.1% | – | – |
| December | 91.7% | – | – |
| Year-to-date average (Jan–Jul) | 84.0% | 92.8% | ▲ 10.4% |
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 | 4 | 0 | ▼ 100.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 6 | 6 | 0.0% |
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 97.6% 521
- Cancelled 2.4% 13
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS JFK Boston Logan International Airport – John F. Kennedy International Airport | 300 | -2.0 min | 93.7% | 435 |
| RDU LGA Raleigh-Durham International Airport – LaGuardia Airport | 693 | 10.4 min | 83.7% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 29 | 29 | 100.0% | 0 |
| December 2024 | 23 | 23 | 91.3% | 0 |
| January 2025 | 20 | 16 | 93.8% | 4 |
| February 2025 | 24 | 23 | 65.2% | 1 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 30 | 29 | 65.5% | 1 |
| August 2025 | 31 | 31 | 100.0% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 29 | 29 | 93.1% | 0 |
| December 2025 | 25 | 24 | 91.7% | 1 |
| January 2026 | 9 | 9 | 88.9% | 0 |
| February 2026 | 18 | 16 | 87.5% | 2 |
| March 2026 | 31 | 30 | 93.3% | 1 |
| April 2026 | 30 | 30 | 96.7% | 0 |
| May 2026 | 20 | 19 | 100.0% | 1 |
| June 2026 | 4 | 4 | 100.0% | 0 |
| July 2026 | 8 | 6 | 83.3% | 2 |