YX4353
YX4353 (Republic Airways) is a multi-stop service on 34 routes, busiest New York to St Louis. Of 610 departures recorded from October 2024 to July 2026, 80.1% left on time, according to the US BTS.
- On-time departures80.1%of 610 flights
- Average delay8.3 min
- July 202622▼ 26.7%vs July 2025
- Cancelled2.8%
- Legs flown under this number34
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 | 31 | 22 | ▼ 29.0% |
| February | 30 | 39 | ▲ 30.0% |
| March | 31 | 35 | ▲ 12.9% |
| April | 30 | 29 | ▼ 3.3% |
| May | 31 | 29 | ▼ 6.5% |
| June | 30 | 22 | ▼ 26.7% |
| July | 30 | 22 | ▼ 26.7% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 10 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 213 | 198 | ▼ 7.0% |
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 | 83.9% | 76.2% | ▼ 9.2% |
| February | 65.5% | 69.2% | ▲ 5.7% |
| March | 90.3% | 84.9% | ▼ 6.1% |
| April | 76.7% | 86.2% | ▲ 12.4% |
| May | 86.2% | 85.7% | ▼ 0.6% |
| June | 80.0% | 63.6% | ▼ 20.5% |
| July | 79.3% | 80.0% | ▲ 0.9% |
| August | 66.7% | – | – |
| September | 84.6% | – | – |
| October | 100.0% | – | in progress |
| November | 76.0% | – | – |
| December | 69.0% | – | – |
| Year-to-date average (Jan–Jul) | 80.3% | 78.0% | ▼ 2.9% |
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 | 0 | 1 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 2 | 1 | ▼ 50.0% |
| June | 0 | 0 | – |
| July | 1 | 7 | ▲ 600.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 11 | ▲ 175.0% |
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 97.2% 593
- Cancelled 2.8% 17
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 30, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LGA STL LaGuardia Airport – St. Louis Lambert International Airport | 1,426 | 6.9 min | 81.8% | 156 |
| LGA RIC LaGuardia Airport – Richmond International Airport | 470 | 4.7 min | 80.4% | 52 |
| DCA PWM Ronald Reagan Washington National Airport – Portland International Jetport | 775 | 22.9 min | 70.5% | 51 |
| DCA MCI Ronald Reagan Washington National Airport – Kansas City International Airport | 1,524 | 12.2 min | 75.0% | 48 |
| ORD MSY Chicago O'Hare International Airport – Louis Armstrong New Orleans International Airport | 1,349 | 7.5 min | 84.4% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 31 | 30 | 93.3% | 1 |
| January 2025 | 31 | 31 | 83.9% | 0 |
| February 2025 | 30 | 29 | 65.5% | 1 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 29 | 86.2% | 2 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 30 | 29 | 79.3% | 1 |
| August 2025 | 27 | 27 | 66.7% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 10 | 10 | 100.0% | 0 |
| November 2025 | 26 | 25 | 76.0% | 1 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 22 | 21 | 76.2% | 1 |
| February 2026 | 39 | 39 | 69.2% | 0 |
| March 2026 | 35 | 33 | 84.9% | 2 |
| April 2026 | 29 | 29 | 86.2% | 0 |
| May 2026 | 29 | 28 | 85.7% | 1 |
| June 2026 | 22 | 22 | 63.6% | 0 |
| July 2026 | 22 | 15 | 80.0% | 7 |