YX4478
YX4478 (Republic Airways) is a multi-stop service on 25 routes, busiest Washington to Indianapolis. Of 684 departures recorded from October 2024 to July 2026, 83.4% left on time, according to the US BTS.
- On-time departures83.4%of 684 flights
- Average delay9.4 min
- July 202646▲ 475.0%vs July 2025
- Cancelled3.2%
- 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 | 27 | 6 | ▼ 77.8% |
| February | 24 | 29 | ▲ 20.8% |
| March | 30 | 36 | ▲ 20.0% |
| April | 11 | 51 | ▲ 363.6% |
| May | 27 | 59 | ▲ 118.5% |
| June | 30 | 60 | ▲ 100.0% |
| July | 8 | 46 | ▲ 475.0% |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 58 | – | – |
| December | 18 | – | – |
| Year to date (Jan–Jul) | 157 | 287 | ▲ 82.8% |
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 | 92.3% | 83.3% | ▼ 9.7% |
| February | 52.4% | 72.0% | ▲ 37.5% |
| March | 82.8% | 90.6% | ▲ 9.5% |
| April | 100.0% | 82.4% | ▼ 17.7% |
| May | 68.0% | 80.7% | ▲ 18.7% |
| June | 79.3% | 88.3% | ▲ 11.4% |
| July | 57.1% | 93.3% | ▲ 63.3% |
| August | 84.6% | – | – |
| September | 80.0% | – | – |
| October | 96.7% | – | in progress |
| November | 91.4% | – | – |
| December | 64.7% | – | – |
| Year-to-date average (Jan–Jul) | 76.0% | 84.4% | ▲ 11.0% |
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 | 3 | 4 | ▲ 33.3% |
| March | 1 | 4 | ▲ 300.0% |
| April | 0 | 0 | – |
| May | 2 | 2 | 0.0% |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 1 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 9 | 11 | ▲ 22.2% |
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 96.8% 662
- Cancelled 3.2% 22
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 23 | 95.7% | 0 |
| November 2024 | 26 | 26 | 80.8% | 0 |
| December 2024 | 28 | 28 | 75.0% | 0 |
| January 2025 | 27 | 26 | 92.3% | 1 |
| February 2025 | 24 | 21 | 52.4% | 3 |
| March 2025 | 30 | 29 | 82.8% | 1 |
| April 2025 | 11 | 11 | 100.0% | 0 |
| May 2025 | 27 | 25 | 68.0% | 2 |
| June 2025 | 30 | 29 | 79.3% | 1 |
| July 2025 | 8 | 7 | 57.1% | 1 |
| August 2025 | 27 | 26 | 84.6% | 1 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 30 | 30 | 96.7% | 0 |
| November 2025 | 58 | 58 | 91.4% | 0 |
| December 2025 | 18 | 17 | 64.7% | 1 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 29 | 25 | 72.0% | 4 |
| March 2026 | 36 | 32 | 90.6% | 4 |
| April 2026 | 51 | 51 | 82.4% | 0 |
| May 2026 | 59 | 57 | 80.7% | 2 |
| June 2026 | 60 | 60 | 88.3% | 0 |
| July 2026 | 46 | 45 | 93.3% | 1 |