YX4636
YX4636 (Republic Airways) is a multi-stop service on 7 routes, busiest Boston to Indianapolis. Of 620 departures recorded from October 2024 to July 2026, 85.1% left on time, according to the US BTS.
- On-time departures85.1%of 620 flights
- Average delay5.1 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.3%
- Legs flown under this number7
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 | 31 | 0.0% |
| February | 25 | 25 | 0.0% |
| March | 26 | 40 | ▲ 53.8% |
| April | 3 | 32 | ▲ 966.7% |
| May | 27 | 31 | ▲ 14.8% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 173 | 220 | ▲ 27.2% |
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 | 93.6% | 86.7% | ▼ 7.4% |
| February | 76.0% | 91.3% | ▲ 20.1% |
| March | 92.3% | 72.5% | ▼ 21.5% |
| April | 100.0% | 96.7% | ▼ 3.3% |
| May | 81.5% | 90.3% | ▲ 10.8% |
| June | 76.7% | 76.7% | 0.0% |
| July | 74.2% | 89.7% | ▲ 20.9% |
| August | 87.1% | – | – |
| September | 93.3% | – | – |
| October | 66.7% | – | in progress |
| November | 90.0% | – | – |
| December | 81.3% | – | – |
| Year-to-date average (Jan–Jul) | 84.9% | 86.3% | ▲ 1.6% |
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 | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 7 |
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 98.7% 612
- Cancelled 1.3% 8
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS IND Boston Logan International Airport – Indianapolis International Airport | 1,313 | 5.0 min | 85.0% | 491 |
| PIT PHL Pittsburgh International Airport – Philadelphia International Airport | 430 | -5.0 min | 95.5% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 28 | 28 | 92.9% | 0 |
| December 2024 | 26 | 26 | 96.2% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 25 | 25 | 76.0% | 0 |
| March 2025 | 26 | 26 | 92.3% | 0 |
| April 2025 | 3 | 3 | 100.0% | 0 |
| May 2025 | 27 | 27 | 81.5% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 31 | 31 | 74.2% | 0 |
| August 2025 | 31 | 31 | 87.1% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 30 | 66.7% | 1 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 32 | 32 | 81.3% | 0 |
| January 2026 | 31 | 30 | 86.7% | 1 |
| February 2026 | 25 | 23 | 91.3% | 2 |
| March 2026 | 40 | 40 | 72.5% | 0 |
| April 2026 | 32 | 30 | 96.7% | 2 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 30 | 76.7% | 0 |
| July 2026 | 31 | 29 | 89.7% | 2 |