YX5597
YX5597 (Republic Airways) is a multi-stop service on 16 routes, busiest Boston to Pittsburgh. Of 912 departures recorded from October 2024 to July 2026, 85.7% left on time, according to the US BTS.
- On-time departures85.7%of 912 flights
- Average delay6.0 min
- July 202654▼ 11.5%vs July 2025
- Cancelled0.9%
- Legs flown under this number16
according to the US BTS · Oct 13, 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 | 27 | 31 | ▲ 14.8% |
| February | 28 | 28 | 0.0% |
| March | 28 | 55 | ▲ 96.4% |
| April | 31 | 52 | ▲ 67.7% |
| May | 31 | 58 | ▲ 87.1% |
| June | 53 | 56 | ▲ 5.7% |
| July | 61 | 54 | ▼ 11.5% |
| August | 62 | – | – |
| September | 40 | – | – |
| October | 51 | – | in progress |
| November | 54 | – | – |
| December | 48 | – | – |
| Year to date (Jan–Jul) | 259 | 334 | ▲ 29.0% |
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 | 100.0% | 85.7% | ▼ 14.3% |
| February | 89.3% | 73.1% | ▼ 18.2% |
| March | 85.7% | 70.9% | ▼ 17.3% |
| April | 80.7% | 82.7% | ▲ 2.5% |
| May | 73.3% | 89.7% | ▲ 22.3% |
| June | 88.7% | 91.1% | ▲ 2.7% |
| July | 85.3% | 78.9% | ▼ 7.5% |
| August | 90.3% | – | – |
| September | 95.0% | – | – |
| October | 86.3% | – | in progress |
| November | 94.4% | – | – |
| December | 77.1% | – | – |
| Year-to-date average (Jan–Jul) | 86.1% | 81.7% | ▼ 5.1% |
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 | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 99.1% 904
- Cancelled 0.9% 8
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS PIT Boston Logan International Airport – Pittsburgh International Airport | 796 | -0.2 min | 90.6% | 192 |
| PIT BOS Pittsburgh International Airport – Boston Logan International Airport | 796 | 4.7 min | 84.8% | 158 |
| BOS JAX Boston Logan International Airport – Jacksonville International Airport | 1,627 | 3.0 min | 86.0% | 150 |
| JAX BOS Jacksonville International Airport – Boston Logan International Airport | 1,627 | 10.2 min | 79.6% | 134 |
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 1.5 min | 95.2% | 62 |
| LGA BUF LaGuardia Airport – Buffalo Niagara International Airport | 469 | 16.4 min | 79.0% | 62 |
| BOS JFK Boston Logan International Airport – John F. Kennedy International Airport | 300 | 1.5 min | 89.2% | 37 |
| PIT JFK Pittsburgh International Airport – John F. Kennedy International Airport | 545 | 19.0 min | 81.3% | 32 |
| LGA ORD LaGuardia Airport – Chicago O'Hare International Airport | 1,177 | 29.5 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 27 | 27 | 88.9% | 0 |
| December 2024 | 20 | 20 | 90.0% | 0 |
| January 2025 | 27 | 27 | 100.0% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 28 | 28 | 85.7% | 0 |
| April 2025 | 31 | 31 | 80.7% | 0 |
| May 2025 | 31 | 30 | 73.3% | 1 |
| June 2025 | 53 | 53 | 88.7% | 0 |
| July 2025 | 61 | 61 | 85.3% | 0 |
| August 2025 | 62 | 62 | 90.3% | 0 |
| September 2025 | 40 | 40 | 95.0% | 0 |
| October 2025 | 51 | 51 | 86.3% | 0 |
| November 2025 | 54 | 54 | 94.4% | 0 |
| December 2025 | 48 | 48 | 77.1% | 0 |
| January 2026 | 31 | 28 | 85.7% | 3 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 55 | 55 | 70.9% | 0 |
| April 2026 | 52 | 52 | 82.7% | 0 |
| May 2026 | 58 | 58 | 89.7% | 0 |
| June 2026 | 56 | 56 | 91.1% | 0 |
| July 2026 | 54 | 52 | 78.9% | 2 |