YX4529
YX4529 (Republic Airways) is a multi-stop service on 25 routes, busiest Pittsburgh to Washington. Of 454 departures recorded from October 2024 to July 2026, 86.1% left on time, according to the US BTS.
- On-time departures86.1%of 454 flights
- Average delay3.3 min
- July 202627▼ 12.9%vs July 2025
- Cancelled3.1%
- Legs flown under this number25
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 | 46 | 2 | ▼ 95.7% |
| February | 34 | 6 | ▼ 82.4% |
| March | 5 | 8 | ▲ 60.0% |
| April | 2 | 2 | 0.0% |
| May | 40 | 6 | ▼ 85.0% |
| June | 32 | 22 | ▼ 31.3% |
| July | 31 | 27 | ▼ 12.9% |
| August | 31 | – | – |
| September | 26 | – | – |
| October | 54 | – | in progress |
| November | 2 | – | – |
| December | 13 | – | – |
| Year to date (Jan–Jul) | 190 | 73 | ▼ 61.6% |
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 | 93.0% | 100.0% | ▲ 7.5% |
| February | 65.5% | 100.0% | ▲ 52.6% |
| March | 80.0% | 75.0% | ▼ 6.3% |
| April | 100.0% | 50.0% | ▼ 50.0% |
| May | 85.0% | 83.3% | ▼ 2.0% |
| June | 90.0% | 100.0% | ▲ 11.1% |
| July | 96.6% | 100.0% | ▲ 3.6% |
| August | 86.2% | – | – |
| September | 88.5% | – | – |
| October | 83.3% | – | in progress |
| November | 0.0% | – | – |
| December | 38.5% | – | – |
| Year-to-date average (Jan–Jul) | 87.2% | 86.9% | ▼ 0.3% |
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 | 3 | 0 | ▼ 100.0% |
| February | 5 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 2 | 0 | ▼ 100.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 12 | 0 | ▼ 100.0% |
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 96.9% 440
- Cancelled 3.1% 14
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PIT DCA Pittsburgh International Airport – Ronald Reagan Washington National Airport | 329 | -4.0 min | 95.6% | 117 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 87.5% | 0 |
| November 2024 | 10 | 10 | 80.0% | 0 |
| December 2024 | 15 | 15 | 100.0% | 0 |
| January 2025 | 46 | 43 | 93.0% | 3 |
| February 2025 | 34 | 29 | 65.5% | 5 |
| March 2025 | 5 | 5 | 80.0% | 0 |
| April 2025 | 2 | 2 | 100.0% | 0 |
| May 2025 | 40 | 40 | 85.0% | 0 |
| June 2025 | 32 | 30 | 90.0% | 2 |
| July 2025 | 31 | 29 | 96.6% | 2 |
| August 2025 | 31 | 29 | 86.2% | 2 |
| September 2025 | 26 | 26 | 88.5% | 0 |
| October 2025 | 54 | 54 | 83.3% | 0 |
| November 2025 | 2 | 2 | 0.0% | 0 |
| December 2025 | 13 | 13 | 38.5% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 6 | 6 | 100.0% | 0 |
| March 2026 | 8 | 8 | 75.0% | 0 |
| April 2026 | 2 | 2 | 50.0% | 0 |
| May 2026 | 6 | 6 | 83.3% | 0 |
| June 2026 | 22 | 22 | 100.0% | 0 |
| July 2026 | 27 | 27 | 100.0% | 0 |