YX4481
YX4481 (Republic Airways) is a multi-stop service on 18 routes, busiest Philadelphia to Boston. Of 737 departures recorded from October 2024 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 737 flights
- Average delay14.9 min
- July 202627▼ 10.0%vs July 2025
- Cancelled4.5%
- Legs flown under this number18
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 | 31 | 32 | ▲ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 27 | 31 | ▲ 14.8% |
| April | 30 | 54 | ▲ 80.0% |
| May | 29 | 51 | ▲ 75.9% |
| June | 30 | 26 | ▼ 13.3% |
| July | 30 | 27 | ▼ 10.0% |
| August | 31 | – | – |
| September | 2 | – | – |
| October | 52 | – | in progress |
| November | 54 | – | – |
| December | 46 | – | – |
| Year to date (Jan–Jul) | 205 | 249 | ▲ 21.5% |
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 | 80.0% | 80.0% | 0.0% |
| February | 81.5% | 92.3% | ▲ 13.3% |
| March | 92.6% | 80.7% | ▼ 12.9% |
| April | 96.7% | 81.5% | ▼ 15.7% |
| May | 82.1% | 90.0% | ▲ 9.6% |
| June | 58.3% | 53.9% | ▼ 7.7% |
| July | 56.5% | 48.0% | ▼ 15.1% |
| August | 83.9% | – | – |
| September | 50.0% | – | – |
| October | 88.5% | – | in progress |
| November | 63.8% | – | – |
| December | 62.8% | – | – |
| Year-to-date average (Jan–Jul) | 78.2% | 75.2% | ▼ 3.9% |
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 | 1 | 2 | ▲ 100.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 6 | 0 | ▼ 100.0% |
| July | 7 | 2 | ▼ 71.4% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 7 | – | – |
| December | 3 | – | – |
| Year to date (Jan–Jul) | 16 | 7 | ▼ 56.3% |
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 95.5% 704
- Cancelled 4.5% 33
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 BOS Philadelphia International Airport – Boston Logan International Airport | 450 | 4.0 min | 85.6% | 213 |
| BNA LGA Nashville International Airport – LaGuardia Airport | 1,228 | 53.2 min | 53.7% | 123 |
| DCA PIT Ronald Reagan Washington National Airport – Pittsburgh International Airport | 329 | 3.5 min | 88.6% | 81 |
| PIT ORD Pittsburgh International Airport – Chicago O'Hare International Airport | 662 | 3.2 min | 88.4% | 44 |
| ORD PIT Chicago O'Hare International Airport – Pittsburgh International Airport | 662 | 3.7 min | 88.6% | 44 |
| LGA ATL LaGuardia Airport – Hartsfield Jackson Atlanta International Airport | 1,225 | 18.8 min | 71.1% | 43 |
| ATL LGA Hartsfield Jackson Atlanta International Airport – LaGuardia Airport | 1,225 | 43.1 min | 62.9% | 39 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 94.3% | 0 |
| November 2024 | 33 | 33 | 87.9% | 0 |
| December 2024 | 30 | 30 | 93.3% | 0 |
| January 2025 | 31 | 30 | 80.0% | 1 |
| February 2025 | 28 | 27 | 81.5% | 1 |
| March 2025 | 27 | 27 | 92.6% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 29 | 28 | 82.1% | 1 |
| June 2025 | 30 | 24 | 58.3% | 6 |
| July 2025 | 30 | 23 | 56.5% | 7 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 2 | 2 | 50.0% | 0 |
| October 2025 | 52 | 52 | 88.5% | 0 |
| November 2025 | 54 | 47 | 63.8% | 7 |
| December 2025 | 46 | 43 | 62.8% | 3 |
| January 2026 | 32 | 30 | 80.0% | 2 |
| February 2026 | 28 | 26 | 92.3% | 2 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 54 | 54 | 81.5% | 0 |
| May 2026 | 51 | 50 | 90.0% | 1 |
| June 2026 | 26 | 26 | 53.9% | 0 |
| July 2026 | 27 | 25 | 48.0% | 2 |