YX4373
YX4373 (Republic Airways) is a multi-stop service on 27 routes, busiest Chicago to Memphis. Of 709 departures recorded from October 2024 to July 2026, 80.6% left on time, according to the US BTS.
- On-time departures80.6%of 709 flights
- Average delay8.8 min
- July 202658▲ 544.4%vs July 2025
- Cancelled2.7%
- Legs flown under this number27
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 | 32 | 36 | ▲ 12.5% |
| February | 28 | 39 | ▲ 39.3% |
| March | 31 | 54 | ▲ 74.2% |
| April | 11 | 58 | ▲ 427.3% |
| May | 6 | 59 | ▲ 883.3% |
| June | 9 | 56 | ▲ 522.2% |
| July | 9 | 58 | ▲ 544.4% |
| August | 24 | – | – |
| September | 50 | – | – |
| October | 10 | – | in progress |
| November | 28 | – | – |
| December | 41 | – | – |
| Year to date (Jan–Jul) | 126 | 360 | ▲ 185.7% |
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 | 90.3% | 71.0% | ▼ 21.4% |
| February | 85.2% | 87.2% | ▲ 2.3% |
| March | 90.0% | 69.2% | ▼ 23.1% |
| April | 81.8% | 77.2% | ▼ 5.7% |
| May | 66.7% | 74.6% | ▲ 11.9% |
| June | 88.9% | 76.8% | ▼ 13.6% |
| July | 100.0% | 77.8% | ▼ 22.2% |
| August | 87.5% | – | – |
| September | 94.0% | – | – |
| October | 80.0% | – | in progress |
| November | 65.4% | – | – |
| December | 56.1% | – | – |
| Year-to-date average (Jan–Jul) | 86.1% | 76.2% | ▼ 11.5% |
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 | 5 | ▲ 400.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 4 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 12 | ▲ 140.0% |
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 97.3% 690
- Cancelled 2.7% 19
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD MEM Chicago O'Hare International Airport – Frederick W. Smith International Airport | 792 | 15.4 min | 72.9% | 108 |
| MEM ORD Frederick W. Smith International Airport – Chicago O'Hare International Airport | 792 | 16.2 min | 73.1% | 106 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | 2.1 min | 85.4% | 105 |
| BOS LGA Boston Logan International Airport – LaGuardia Airport | 296 | 11.1 min | 79.4% | 105 |
| BOS JFK Boston Logan International Airport – John F. Kennedy International Airport | 300 | 2.1 min | 87.9% | 39 |
| RDU DCA Raleigh-Durham International Airport – Ronald Reagan Washington National Airport | 365 | -1.1 min | 94.4% | 37 |
| PIT ORD Pittsburgh International Airport – Chicago O'Hare International Airport | 662 | -3.8 min | 94.4% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 97.1% | 0 |
| November 2024 | 11 | 11 | 100.0% | 0 |
| December 2024 | 25 | 25 | 100.0% | 0 |
| January 2025 | 32 | 31 | 90.3% | 1 |
| February 2025 | 28 | 27 | 85.2% | 1 |
| March 2025 | 31 | 30 | 90.0% | 1 |
| April 2025 | 11 | 11 | 81.8% | 0 |
| May 2025 | 6 | 6 | 66.7% | 0 |
| June 2025 | 9 | 9 | 88.9% | 0 |
| July 2025 | 9 | 7 | 100.0% | 2 |
| August 2025 | 24 | 24 | 87.5% | 0 |
| September 2025 | 50 | 50 | 94.0% | 0 |
| October 2025 | 10 | 10 | 80.0% | 0 |
| November 2025 | 28 | 26 | 65.4% | 2 |
| December 2025 | 41 | 41 | 56.1% | 0 |
| January 2026 | 36 | 31 | 71.0% | 5 |
| February 2026 | 39 | 39 | 87.2% | 0 |
| March 2026 | 54 | 52 | 69.2% | 2 |
| April 2026 | 58 | 57 | 77.2% | 1 |
| May 2026 | 59 | 59 | 74.6% | 0 |
| June 2026 | 56 | 56 | 76.8% | 0 |
| July 2026 | 58 | 54 | 77.8% | 4 |