YX4435
YX4435 (Republic Airways) is a multi-stop service on 21 routes, busiest Chicago to Washington. Of 827 departures recorded from October 2024 to July 2026, 80.5% left on time, according to the US BTS.
- On-time departures80.5%of 827 flights
- Average delay11.9 min
- July 202631▼ 39.2%vs July 2025
- Cancelled3.9%
- 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 | 33 | 57 | ▲ 72.7% |
| February | 36 | 39 | ▲ 8.3% |
| March | 41 | 49 | ▲ 19.5% |
| April | 40 | 34 | ▼ 15.0% |
| May | 10 | 30 | ▲ 200.0% |
| June | 44 | 30 | ▼ 31.8% |
| July | 51 | 31 | ▼ 39.2% |
| August | 56 | – | – |
| September | 28 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 255 | 270 | ▲ 5.9% |
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 | 87.1% | 62.0% | ▼ 28.8% |
| February | 100.0% | 78.4% | ▼ 21.6% |
| March | 97.6% | 45.2% | ▼ 53.6% |
| April | 97.5% | 67.7% | ▼ 30.6% |
| May | 90.0% | 80.0% | ▼ 11.1% |
| June | 48.8% | 100.0% | ▲ 105.0% |
| July | 74.4% | 90.0% | ▲ 20.9% |
| August | 78.6% | – | – |
| September | 96.4% | – | – |
| October | 96.3% | – | in progress |
| November | 57.1% | – | – |
| December | 62.1% | – | – |
| Year-to-date average (Jan–Jul) | 85.1% | 74.8% | ▼ 12.1% |
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 | 2 | 7 | ▲ 250.0% |
| February | 0 | 2 | – |
| March | 0 | 7 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 3 | 0 | ▼ 100.0% |
| July | 8 | 1 | ▼ 87.5% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 13 | 17 | ▲ 30.8% |
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 96.1% 795
- Cancelled 3.9% 32
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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 94.1% | 0 |
| November 2024 | 52 | 52 | 96.2% | 0 |
| December 2024 | 46 | 46 | 89.1% | 0 |
| January 2025 | 33 | 31 | 87.1% | 2 |
| February 2025 | 36 | 36 | 100.0% | 0 |
| March 2025 | 41 | 41 | 97.6% | 0 |
| April 2025 | 40 | 40 | 97.5% | 0 |
| May 2025 | 10 | 10 | 90.0% | 0 |
| June 2025 | 44 | 41 | 48.8% | 3 |
| July 2025 | 51 | 43 | 74.4% | 8 |
| August 2025 | 56 | 56 | 78.6% | 0 |
| September 2025 | 28 | 28 | 96.4% | 0 |
| October 2025 | 27 | 27 | 96.3% | 0 |
| November 2025 | 29 | 28 | 57.1% | 1 |
| December 2025 | 30 | 29 | 62.1% | 1 |
| January 2026 | 57 | 50 | 62.0% | 7 |
| February 2026 | 39 | 37 | 78.4% | 2 |
| March 2026 | 49 | 42 | 45.2% | 7 |
| April 2026 | 34 | 34 | 67.7% | 0 |
| May 2026 | 30 | 30 | 80.0% | 0 |
| June 2026 | 30 | 30 | 100.0% | 0 |
| July 2026 | 31 | 30 | 90.0% | 1 |