YX4484
YX4484 (Republic Airways) is a multi-stop service on 21 routes, busiest Chicago to Pittsburgh. Of 524 departures recorded from October 2024 to July 2026, 83.7% left on time, according to the US BTS.
- On-time departures83.7%of 524 flights
- Average delay9.1 min
- July 202627▲ 3.8%vs July 2025
- Cancelled2.9%
- Legs flown under this number21
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 | 28 | 10 | ▼ 64.3% |
| February | 24 | 18 | ▼ 25.0% |
| March | 26 | 31 | ▲ 19.2% |
| April | 5 | 30 | ▲ 500.0% |
| May | 24 | 31 | ▲ 29.2% |
| June | 26 | 30 | ▲ 15.4% |
| July | 26 | 27 | ▲ 3.8% |
| August | 26 | – | – |
| September | 27 | – | – |
| October | 27 | – | in progress |
| November | 22 | – | – |
| December | 26 | – | – |
| Year to date (Jan–Jul) | 159 | 177 | ▲ 11.3% |
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 | 92.6% | 80.0% | ▼ 13.6% |
| February | 91.3% | 81.3% | ▼ 11.0% |
| March | 87.5% | 50.0% | ▼ 42.9% |
| April | 80.0% | 89.3% | ▲ 11.6% |
| May | 54.2% | 80.7% | ▲ 48.9% |
| June | 80.8% | 93.3% | ▲ 15.6% |
| July | 84.0% | 96.2% | ▲ 14.5% |
| August | 92.3% | – | – |
| September | 88.5% | – | – |
| October | 100.0% | – | in progress |
| November | 90.5% | – | – |
| December | 57.7% | – | – |
| Year-to-date average (Jan–Jul) | 81.5% | 81.5% | ▲ 0.1% |
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 | 0 | ▼ 100.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 2 | 3 | ▲ 50.0% |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 8 | ▲ 60.0% |
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 97.1% 509
- Cancelled 2.9% 15
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD PIT Chicago O'Hare International Airport – Pittsburgh International Airport | 662 | 0.0 min | 94.1% | 121 |
| PIT LGA Pittsburgh International Airport – LaGuardia Airport | 538 | 3.2 min | 89.0% | 95 |
| LGA PIT LaGuardia Airport – Pittsburgh International Airport | 538 | 11.7 min | 85.3% | 76 |
| DCA ORD Ronald Reagan Washington National Airport – Chicago O'Hare International Airport | 983 | 22.1 min | 71.0% | 74 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 100.0% | 0 |
| November 2024 | 25 | 25 | 88.0% | 0 |
| December 2024 | 27 | 27 | 88.9% | 0 |
| January 2025 | 28 | 27 | 92.6% | 1 |
| February 2025 | 24 | 23 | 91.3% | 1 |
| March 2025 | 26 | 24 | 87.5% | 2 |
| April 2025 | 5 | 5 | 80.0% | 0 |
| May 2025 | 24 | 24 | 54.2% | 0 |
| June 2025 | 26 | 26 | 80.8% | 0 |
| July 2025 | 26 | 25 | 84.0% | 1 |
| August 2025 | 26 | 26 | 92.3% | 0 |
| September 2025 | 27 | 26 | 88.5% | 1 |
| October 2025 | 27 | 27 | 100.0% | 0 |
| November 2025 | 22 | 21 | 90.5% | 1 |
| December 2025 | 26 | 26 | 57.7% | 0 |
| January 2026 | 10 | 10 | 80.0% | 0 |
| February 2026 | 18 | 16 | 81.3% | 2 |
| March 2026 | 31 | 28 | 50.0% | 3 |
| April 2026 | 30 | 28 | 89.3% | 2 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 27 | 26 | 96.2% | 1 |