YX4377
YX4377 (Republic Airways) is a multi-stop service on 26 routes, busiest Washington to New York. Of 773 departures recorded from October 2024 to July 2026, 86.2% left on time, according to the US BTS.
- On-time departures86.2%of 773 flights
- Average delay4.3 min
- July 202657▲ 612.5%vs July 2025
- Cancelled2.3%
- Legs flown under this number26
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 | 30 | 49 | ▲ 63.3% |
| February | 28 | 48 | ▲ 71.4% |
| March | 30 | 54 | ▲ 80.0% |
| April | 25 | 34 | ▲ 36.0% |
| May | 30 | 40 | ▲ 33.3% |
| June | 12 | 56 | ▲ 366.7% |
| July | 8 | 57 | ▲ 612.5% |
| August | 46 | – | – |
| September | 60 | – | – |
| October | 49 | – | in progress |
| November | 21 | – | – |
| December | 24 | – | – |
| Year to date (Jan–Jul) | 163 | 338 | ▲ 107.4% |
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 | 85.7% | 84.8% | ▼ 1.1% |
| February | 80.8% | 75.0% | ▼ 7.1% |
| March | 73.3% | 84.9% | ▲ 15.8% |
| April | 96.0% | 93.9% | ▼ 2.1% |
| May | 90.0% | 90.0% | 0.0% |
| June | 75.0% | 92.9% | ▲ 23.8% |
| July | 100.0% | 90.6% | ▼ 9.4% |
| August | 84.4% | – | – |
| September | 85.0% | – | – |
| October | 93.9% | – | in progress |
| November | 100.0% | – | – |
| December | 63.6% | – | – |
| Year-to-date average (Jan–Jul) | 85.8% | 87.4% | ▲ 1.9% |
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 | 2 | 3 | ▲ 50.0% |
| February | 2 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 4 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 4 | 9 | ▲ 125.0% |
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 97.7% 755
- Cancelled 2.3% 18
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
12Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 27 | 27 | 92.6% | 0 |
| December 2024 | 26 | 26 | 73.1% | 0 |
| January 2025 | 30 | 28 | 85.7% | 2 |
| February 2025 | 28 | 26 | 80.8% | 2 |
| March 2025 | 30 | 30 | 73.3% | 0 |
| April 2025 | 25 | 25 | 96.0% | 0 |
| May 2025 | 30 | 30 | 90.0% | 0 |
| June 2025 | 12 | 12 | 75.0% | 0 |
| July 2025 | 8 | 8 | 100.0% | 0 |
| August 2025 | 46 | 45 | 84.4% | 1 |
| September 2025 | 60 | 60 | 85.0% | 0 |
| October 2025 | 49 | 49 | 93.9% | 0 |
| November 2025 | 21 | 19 | 100.0% | 2 |
| December 2025 | 24 | 22 | 63.6% | 2 |
| January 2026 | 49 | 46 | 84.8% | 3 |
| February 2026 | 48 | 48 | 75.0% | 0 |
| March 2026 | 54 | 53 | 84.9% | 1 |
| April 2026 | 34 | 33 | 93.9% | 1 |
| May 2026 | 40 | 40 | 90.0% | 0 |
| June 2026 | 56 | 56 | 92.9% | 0 |
| July 2026 | 57 | 53 | 90.6% | 4 |