YX4518
YX4518 (Republic Airways) is a multi-stop service on 24 routes, busiest Philadelphia to Nantucket. Of 680 departures recorded from October 2024 to July 2026, 80.9% left on time, according to the US BTS.
- On-time departures80.9%of 680 flights
- Average delay8.9 min
- July 202631▼ 50.0%vs July 2025
- Cancelled5.2%
- Legs flown under this number24
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 | 4 | 49 | ▲ 1,125.0% |
| February | – | 36 | – |
| March | 24 | 52 | ▲ 116.7% |
| April | 16 | 35 | ▲ 118.8% |
| May | 31 | 30 | ▼ 3.2% |
| June | 28 | 30 | ▲ 7.1% |
| July | 62 | 31 | ▼ 50.0% |
| August | 62 | – | – |
| September | 27 | – | – |
| October | 27 | – | in progress |
| November | 48 | – | – |
| December | 29 | – | – |
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 | 100.0% | 91.3% | ▼ 8.7% |
| February | – | 88.2% | – |
| March | 95.7% | 61.7% | ▼ 35.5% |
| April | 100.0% | 85.3% | ▼ 14.7% |
| May | 73.3% | 83.3% | ▲ 13.6% |
| June | 75.0% | 85.2% | ▲ 13.6% |
| July | 83.9% | 82.8% | ▼ 1.4% |
| August | 68.9% | – | – |
| September | 96.3% | – | – |
| October | 58.3% | – | in progress |
| November | 73.9% | – | – |
| December | 75.0% | – | – |
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 | 0 | 3 | – |
| February | – | 2 | – |
| March | 1 | 5 | ▲ 400.0% |
| April | 0 | 1 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 4 | 3 | ▼ 25.0% |
| July | 6 | 2 | ▼ 66.7% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 3 | – | in progress |
| November | 2 | – | – |
| 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 94.9% 645
- Cancelled 5.1% 35
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 |
|---|---|---|---|---|
| PHL ACK Philadelphia International Airport – Nantucket Memorial Airport | 464 | 11.6 min | 78.7% | 76 |
| ACK PHL Nantucket Memorial Airport – Philadelphia International Airport | 464 | 19.0 min | 74.2% | 76 |
| ORD RDU Chicago O'Hare International Airport – Raleigh-Durham International Airport | 1,039 | 4.0 min | 85.1% | 72 |
| ATL LGA Hartsfield Jackson Atlanta International Airport – LaGuardia Airport | 1,225 | -3.4 min | 93.6% | 64 |
| LGA RDU LaGuardia Airport – Raleigh-Durham International Airport | 693 | 16.5 min | 59.6% | 53 |
| BOS STL Boston Logan International Airport – St. Louis Lambert International Airport | 1,680 | 0.2 min | 88.4% | 43 |
| CLE PHL Cleveland Hopkins International Airport – Philadelphia International Airport | 583 | 13.5 min | 70.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 100.0% | 0 |
| November 2024 | 17 | 17 | 100.0% | 0 |
| December 2024 | 24 | 24 | 79.2% | 0 |
| January 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 24 | 23 | 95.7% | 1 |
| April 2025 | 16 | 16 | 100.0% | 0 |
| May 2025 | 31 | 30 | 73.3% | 1 |
| June 2025 | 28 | 24 | 75.0% | 4 |
| July 2025 | 62 | 56 | 83.9% | 6 |
| August 2025 | 62 | 61 | 68.9% | 1 |
| September 2025 | 27 | 27 | 96.3% | 0 |
| October 2025 | 27 | 24 | 58.3% | 3 |
| November 2025 | 48 | 46 | 73.9% | 2 |
| December 2025 | 29 | 28 | 75.0% | 1 |
| January 2026 | 49 | 46 | 91.3% | 3 |
| February 2026 | 36 | 34 | 88.2% | 2 |
| March 2026 | 52 | 47 | 61.7% | 5 |
| April 2026 | 35 | 34 | 85.3% | 1 |
| May 2026 | 30 | 30 | 83.3% | 0 |
| June 2026 | 30 | 27 | 85.2% | 3 |
| July 2026 | 31 | 29 | 82.8% | 2 |