YX4645
YX4645 (Republic Airways) is a multi-stop service on 33 routes, busiest Washington to New York. Of 607 departures recorded from October 2024 to July 2026, 83.4% left on time, according to the US BTS.
- On-time departures83.4%of 607 flights
- Average delay10.8 min
- July 202626▼ 55.2%vs July 2025
- Cancelled1.8%
- Legs flown under this number33
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 | 10 | 5 | ▼ 50.0% |
| February | 2 | 20 | ▲ 900.0% |
| March | 25 | 50 | ▲ 100.0% |
| April | 42 | 33 | ▼ 21.4% |
| May | 52 | 29 | ▼ 44.2% |
| June | 39 | 26 | ▼ 33.3% |
| July | 58 | 26 | ▼ 55.2% |
| August | 10 | – | – |
| September | 28 | – | – |
| October | 57 | – | in progress |
| November | 14 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 228 | 189 | ▼ 17.1% |
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% | 100.0% | 0.0% |
| February | 50.0% | 83.3% | ▲ 66.7% |
| March | 88.0% | 75.0% | ▼ 14.8% |
| April | 95.2% | 81.8% | ▼ 14.1% |
| May | 94.2% | 82.1% | ▼ 12.8% |
| June | 71.8% | 73.1% | ▲ 1.8% |
| July | 70.2% | 87.5% | ▲ 24.7% |
| August | 60.0% | – | – |
| September | 78.6% | – | – |
| October | 87.7% | – | in progress |
| November | 83.3% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 81.3% | 83.3% | ▲ 2.4% |
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 | 0 | 1 | – |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 8 | ▲ 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 98.2% 596
- Cancelled 1.8% 11
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DCA LGA Ronald Reagan Washington National Airport – LaGuardia Airport | 345 | 16.6 min | 76.3% | 61 |
| BOS LGA Boston Logan International Airport – LaGuardia Airport | 296 | 1.8 min | 94.3% | 53 |
| ORD BGR Chicago O'Hare International Airport – Bangor International Airport | 1,569 | 11.9 min | 70.8% | 48 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | -3.6 min | 95.8% | 48 |
| BGR ORD Bangor International Airport – Chicago O'Hare International Airport | 1,569 | 45.3 min | 61.7% | 48 |
| SYR ORD Syracuse Hancock International Airport – Chicago O'Hare International Airport | 974 | -1.6 min | 92.9% | 43 |
| CAE DCA Columbia Metropolitan Airport – Ronald Reagan Washington National Airport | 657 | 12.4 min | 78.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 18 | 18 | 94.4% | 0 |
| December 2024 | 39 | 39 | 89.7% | 0 |
| January 2025 | 10 | 10 | 100.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 25 | 25 | 88.0% | 0 |
| April 2025 | 42 | 42 | 95.2% | 0 |
| May 2025 | 52 | 52 | 94.2% | 0 |
| June 2025 | 39 | 39 | 71.8% | 0 |
| July 2025 | 58 | 57 | 70.2% | 1 |
| August 2025 | 10 | 10 | 60.0% | 0 |
| September 2025 | 28 | 28 | 78.6% | 0 |
| October 2025 | 57 | 57 | 87.7% | 0 |
| November 2025 | 14 | 12 | 83.3% | 2 |
| December 2025 | 4 | 4 | 75.0% | 0 |
| January 2026 | 5 | 4 | 100.0% | 1 |
| February 2026 | 20 | 18 | 83.3% | 2 |
| March 2026 | 50 | 48 | 75.0% | 2 |
| April 2026 | 33 | 33 | 81.8% | 0 |
| May 2026 | 29 | 28 | 82.1% | 1 |
| June 2026 | 26 | 26 | 73.1% | 0 |
| July 2026 | 26 | 24 | 87.5% | 2 |