YX4543
YX4543 (Republic Airways) is a multi-stop service on 25 routes, busiest Boston to New York. Of 599 departures recorded from October 2024 to July 2026, 81.6% left on time, according to the US BTS.
- On-time departures81.6%of 599 flights
- Average delay9.0 min
- July 202662▲ 100.0%vs July 2025
- Cancelled3.8%
- Legs flown under this number25
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 | 54 | 8 | ▼ 85.2% |
| February | 20 | 12 | ▼ 40.0% |
| March | – | 29 | – |
| April | 27 | 6 | ▼ 77.8% |
| May | 31 | 22 | ▼ 29.0% |
| June | 30 | 60 | ▲ 100.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 47 | – | – |
| September | 28 | – | – |
| October | 30 | – | in progress |
| November | 6 | – | – |
| December | 24 | – | – |
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 | 94.0% | 87.5% | ▼ 6.9% |
| February | 57.9% | 80.0% | ▲ 38.2% |
| March | – | 100.0% | – |
| April | 85.2% | 66.7% | ▼ 21.7% |
| May | 76.7% | 86.4% | ▲ 12.6% |
| June | 78.6% | 88.3% | ▲ 12.4% |
| July | 55.6% | 83.9% | ▲ 51.0% |
| August | 59.1% | – | – |
| September | 89.3% | – | – |
| October | 79.3% | – | in progress |
| November | 100.0% | – | – |
| December | 73.9% | – | – |
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 | 4 | 0 | ▼ 100.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | – | 2 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 2 | 0 | ▼ 100.0% |
| July | 4 | 0 | ▼ 100.0% |
| August | 3 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| 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 96.2% 576
- Cancelled 3.8% 23
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 16 | 16 | 100.0% | 0 |
| December 2024 | 39 | 37 | 81.1% | 2 |
| January 2025 | 54 | 50 | 94.0% | 4 |
| February 2025 | 20 | 19 | 57.9% | 1 |
| April 2025 | 27 | 27 | 85.2% | 0 |
| May 2025 | 31 | 30 | 76.7% | 1 |
| June 2025 | 30 | 28 | 78.6% | 2 |
| July 2025 | 31 | 27 | 55.6% | 4 |
| August 2025 | 47 | 44 | 59.1% | 3 |
| September 2025 | 28 | 28 | 89.3% | 0 |
| October 2025 | 30 | 29 | 79.3% | 1 |
| November 2025 | 6 | 6 | 100.0% | 0 |
| December 2025 | 24 | 23 | 73.9% | 1 |
| January 2026 | 8 | 8 | 87.5% | 0 |
| February 2026 | 12 | 10 | 80.0% | 2 |
| March 2026 | 29 | 27 | 100.0% | 2 |
| April 2026 | 6 | 6 | 66.7% | 0 |
| May 2026 | 22 | 22 | 86.4% | 0 |
| June 2026 | 60 | 60 | 88.3% | 0 |
| July 2026 | 62 | 62 | 83.9% | 0 |