YX4390
YX4390 (Republic Airways) is a multi-stop service on 30 routes, busiest Pittsburgh to New York. Of 569 departures recorded from October 2024 to July 2026, 77.6% left on time, according to the US BTS.
- On-time departures77.6%of 569 flights
- Average delay15.5 min
- July 202631▲ 3.3%vs July 2025
- Cancelled5.1%
- Legs flown under this number30
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 | 24 | 36 | ▲ 50.0% |
| February | 28 | 39 | ▲ 39.3% |
| March | 30 | 12 | ▼ 60.0% |
| April | 30 | 48 | ▲ 60.0% |
| May | 8 | 51 | ▲ 537.5% |
| June | 26 | 30 | ▲ 15.4% |
| July | 30 | 31 | ▲ 3.3% |
| August | 31 | – | – |
| September | 19 | – | – |
| October | 3 | – | in progress |
| November | 9 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 176 | 247 | ▲ 40.3% |
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 | 91.7% | 81.8% | ▼ 10.7% |
| February | 77.8% | 68.4% | ▼ 12.0% |
| March | 96.7% | 40.0% | ▼ 58.6% |
| April | 73.3% | 79.2% | ▲ 8.0% |
| May | 75.0% | 81.3% | ▲ 8.3% |
| June | 52.2% | 66.7% | ▲ 27.8% |
| July | 87.0% | 44.0% | ▼ 49.4% |
| August | 93.6% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 77.8% | – | – |
| December | 69.8% | – | – |
| Year-to-date average (Jan–Jul) | 79.1% | 65.9% | ▼ 16.7% |
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 | 3 | – |
| February | 1 | 1 | 0.0% |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 3 | – |
| June | 3 | 3 | 0.0% |
| July | 7 | 6 | ▼ 14.3% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 11 | 18 | ▲ 63.6% |
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 94.9% 540
- Cancelled 5.1% 29
Share of all recorded flights in the period, all legs. · Oct 27, 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 |
|---|---|---|---|---|
| PIT LGA Pittsburgh International Airport – LaGuardia Airport | 538 | 18.7 min | 84.9% | 76 |
| BOS JFK Boston Logan International Airport – John F. Kennedy International Airport | 300 | 35.2 min | 57.1% | 72 |
| LGA CLE LaGuardia Airport – Cleveland Hopkins International Airport | 672 | 2.4 min | 89.2% | 38 |
| CLE LGA Cleveland Hopkins International Airport – LaGuardia Airport | 672 | 10.3 min | 75.0% | 38 |
| JFK RDU John F. Kennedy International Airport – Raleigh-Durham International Airport | 686 | 5.9 min | 90.9% | 37 |
| BWI ORD Baltimore/Washington International Thurgood Marshall Airport – Chicago O'Hare International Airport | 998 | 0.1 min | 94.3% | 36 |
| OKC DCA OKC Will Rogers World Airport – Ronald Reagan Washington National Airport | 1,859 | 16.7 min | 71.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 32 | 32 | 93.8% | 0 |
| December 2024 | 8 | 8 | 62.5% | 0 |
| January 2025 | 24 | 24 | 91.7% | 0 |
| February 2025 | 28 | 27 | 77.8% | 1 |
| March 2025 | 30 | 30 | 96.7% | 0 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 8 | 8 | 75.0% | 0 |
| June 2025 | 26 | 23 | 52.2% | 3 |
| July 2025 | 30 | 23 | 87.0% | 7 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 19 | 19 | 100.0% | 0 |
| October 2025 | 3 | 3 | 100.0% | 0 |
| November 2025 | 9 | 9 | 77.8% | 0 |
| December 2025 | 43 | 43 | 69.8% | 0 |
| January 2026 | 36 | 33 | 81.8% | 3 |
| February 2026 | 39 | 38 | 68.4% | 1 |
| March 2026 | 12 | 10 | 40.0% | 2 |
| April 2026 | 48 | 48 | 79.2% | 0 |
| May 2026 | 51 | 48 | 81.3% | 3 |
| June 2026 | 30 | 27 | 66.7% | 3 |
| July 2026 | 31 | 25 | 44.0% | 6 |