YX4363
YX4363 (Republic Airways) is a multi-stop service on 36 routes, busiest Washington to Nantucket. Of 635 departures recorded from October 2024 to July 2026, 79.6% left on time, according to the US BTS.
- On-time departures79.6%of 635 flights
- Average delay11.2 min
- July 202631▼ 50.0%vs July 2025
- Cancelled4.3%
- Legs flown under this number36
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 26 | 30 | ▲ 15.4% |
| February | 28 | 28 | 0.0% |
| March | 7 | 31 | ▲ 342.9% |
| April | 30 | 18 | ▼ 40.0% |
| May | 31 | 27 | ▼ 12.9% |
| June | 42 | 30 | ▼ 28.6% |
| July | 62 | 31 | ▼ 50.0% |
| August | 62 | – | – |
| September | 28 | – | – |
| October | 9 | – | in progress |
| November | 23 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 226 | 195 | ▼ 13.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 73.1% | 66.7% | ▼ 8.8% |
| February | 73.1% | 88.5% | ▲ 21.0% |
| March | 100.0% | 61.5% | ▼ 38.5% |
| April | 73.3% | 82.4% | ▲ 12.3% |
| May | 87.1% | 76.9% | ▼ 11.7% |
| June | 90.2% | 59.3% | ▼ 34.3% |
| July | 87.1% | 69.2% | ▼ 20.5% |
| August | 85.5% | – | – |
| September | 75.0% | – | – |
| October | 100.0% | – | in progress |
| November | 90.5% | – | – |
| December | 65.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.4% | 72.1% | ▼ 13.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 3 | – |
| February | 2 | 2 | 0.0% |
| March | 1 | 5 | ▲ 400.0% |
| April | 0 | 1 | – |
| May | 0 | 1 | – |
| June | 1 | 3 | ▲ 200.0% |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 20 | ▲ 400.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 95.7% 608
- Cancelled 4.3% 27
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DCA ACK Ronald Reagan Washington National Airport – Nantucket Memorial Airport | 651 | 0.9 min | 90.8% | 76 |
| ACK DCA Nantucket Memorial Airport – Ronald Reagan Washington National Airport | 651 | 8.9 min | 77.6% | 76 |
| ORD IND Chicago O'Hare International Airport – Indianapolis International Airport | 286 | 36.2 min | 67.2% | 72 |
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 22.8 min | 74.6% | 57 |
| ORD PIT Chicago O'Hare International Airport – Pittsburgh International Airport | 662 | 13.1 min | 70.2% | 50 |
| ORD BDL Chicago O'Hare International Airport – Bradley International Airport | 1,257 | 6.5 min | 75.8% | 36 |
| PHL MSP Philadelphia International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,574 | 18.3 min | 74.2% | 31 |
| ORD SDF Chicago O'Hare International Airport – Louisville Muhammad Ali International Airport | 462 | 5.6 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 38 | 38 | 92.1% | 0 |
| November 2024 | 15 | 15 | 86.7% | 0 |
| December 2024 | 6 | 6 | 66.7% | 0 |
| January 2025 | 26 | 26 | 73.1% | 0 |
| February 2025 | 28 | 26 | 73.1% | 2 |
| March 2025 | 7 | 6 | 100.0% | 1 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 42 | 41 | 90.2% | 1 |
| July 2025 | 62 | 62 | 87.1% | 0 |
| August 2025 | 62 | 62 | 85.5% | 0 |
| September 2025 | 28 | 28 | 75.0% | 0 |
| October 2025 | 9 | 9 | 100.0% | 0 |
| November 2025 | 23 | 21 | 90.5% | 2 |
| December 2025 | 33 | 32 | 65.6% | 1 |
| January 2026 | 30 | 27 | 66.7% | 3 |
| February 2026 | 28 | 26 | 88.5% | 2 |
| March 2026 | 31 | 26 | 61.5% | 5 |
| April 2026 | 18 | 17 | 82.4% | 1 |
| May 2026 | 27 | 26 | 76.9% | 1 |
| June 2026 | 30 | 27 | 59.3% | 3 |
| July 2026 | 31 | 26 | 69.2% | 5 |