YX4678
YX4678 (Republic Airways) is a multi-stop service on 22 routes, busiest Pittsburgh to Chicago. Of 639 departures recorded from November 2024 to July 2026, 70.4% left on time, according to the US BTS.
- On-time departures70.4%of 639 flights
- Average delay22.8 min
- July 202662▲ 100.0%vs July 2025
- Cancelled3.9%
- Legs flown under this number22
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 | 8 | 31 | ▲ 287.5% |
| February | 22 | 23 | ▲ 4.5% |
| March | 48 | 8 | ▼ 83.3% |
| April | 37 | 25 | ▼ 32.4% |
| May | 28 | 41 | ▲ 46.4% |
| June | 16 | 60 | ▲ 275.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 31 | – | – |
| September | 4 | – | – |
| October | 48 | – | in progress |
| November | 57 | – | – |
| December | 46 | – | – |
| Year to date (Jan–Jul) | 190 | 250 | ▲ 31.6% |
according to the US BTS · November 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 | 62.5% | 85.2% | ▲ 36.3% |
| February | 59.1% | 60.9% | ▲ 3.0% |
| March | 80.9% | 66.7% | ▼ 17.5% |
| April | 70.3% | 72.0% | ▲ 2.5% |
| May | 63.0% | 73.2% | ▲ 16.2% |
| June | 93.8% | 66.1% | ▼ 29.5% |
| July | 80.7% | 48.2% | ▼ 40.3% |
| August | 61.3% | – | – |
| September | 100.0% | – | – |
| October | 75.6% | – | in progress |
| November | 77.4% | – | – |
| December | 68.9% | – | – |
| Year-to-date average (Jan–Jul) | 72.9% | 67.5% | ▼ 7.4% |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 4 | – |
| February | 0 | 0 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 1 | – |
| July | 0 | 8 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 3 | – | in progress |
| November | 4 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 15 | ▲ 650.0% |
according to the US BTS · November 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% 614
- Cancelled 3.9% 25
Share of all recorded flights in the period, all legs. · Nov 9, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PIT ORD Pittsburgh International Airport – Chicago O'Hare International Airport | 662 | 16.8 min | 76.6% | 78 |
| MVY PHL Martha's Vineyard Airport – Philadelphia International Airport | 425 | 12.7 min | 76.3% | 76 |
| BOS STL Boston Logan International Airport – St. Louis Lambert International Airport | 1,680 | 29.2 min | 63.2% | 72 |
| STL BOS St. Louis Lambert International Airport – Boston Logan International Airport | 1,680 | 48.4 min | 51.5% | 71 |
| BNA LGA Nashville International Airport – LaGuardia Airport | 1,228 | 33.1 min | 63.2% | 58 |
| ORD ALB Chicago O'Hare International Airport – Albany International Airport | 1,161 | 18.1 min | 73.3% | 46 |
| ALB ORD Albany International Airport – Chicago O'Hare International Airport | 1,161 | 18.9 min | 75.6% | 45 |
| JFK BNA John F. Kennedy International Airport – Nashville International Airport | 1,230 | 10.0 min | 75.8% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 4 | 4 | 75.0% | 0 |
| December 2024 | 9 | 9 | 77.8% | 0 |
| January 2025 | 8 | 8 | 62.5% | 0 |
| February 2025 | 22 | 22 | 59.1% | 0 |
| March 2025 | 48 | 47 | 80.9% | 1 |
| April 2025 | 37 | 37 | 70.3% | 0 |
| May 2025 | 28 | 27 | 63.0% | 1 |
| June 2025 | 16 | 16 | 93.8% | 0 |
| July 2025 | 31 | 31 | 80.7% | 0 |
| August 2025 | 31 | 31 | 61.3% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 48 | 45 | 75.6% | 3 |
| November 2025 | 57 | 53 | 77.4% | 4 |
| December 2025 | 46 | 45 | 68.9% | 1 |
| January 2026 | 31 | 27 | 85.2% | 4 |
| February 2026 | 23 | 23 | 60.9% | 0 |
| March 2026 | 8 | 6 | 66.7% | 2 |
| April 2026 | 25 | 25 | 72.0% | 0 |
| May 2026 | 41 | 41 | 73.2% | 0 |
| June 2026 | 60 | 59 | 66.1% | 1 |
| July 2026 | 62 | 54 | 48.2% | 8 |