YX4650
YX4650 (Republic Airways) is a multi-stop service on 29 routes, busiest Chicago to Boston. Of 512 departures recorded from November 2024 to July 2026, 80.6% left on time, according to the US BTS.
- On-time departures80.6%of 512 flights
- Average delay13.4 min
- July 20263▼ 88.0%vs July 2025
- Cancelled5.3%
- Legs flown under this number29
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 | 13 | 30 | ▲ 130.8% |
| February | 4 | 14 | ▲ 250.0% |
| March | 5 | 35 | ▲ 600.0% |
| April | 56 | 32 | ▼ 42.9% |
| May | 50 | 22 | ▼ 56.0% |
| June | 37 | 4 | ▼ 89.2% |
| July | 25 | 3 | ▼ 88.0% |
| August | 15 | – | – |
| September | 22 | – | – |
| October | 53 | – | in progress |
| November | 29 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 190 | 140 | ▼ 26.3% |
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 | 92.3% | 76.0% | ▼ 17.7% |
| February | 100.0% | 64.3% | ▼ 35.7% |
| March | 75.0% | 77.4% | ▲ 3.2% |
| April | 90.6% | 90.0% | ▼ 0.6% |
| May | 87.8% | 95.5% | ▲ 8.8% |
| June | 81.1% | 100.0% | ▲ 23.3% |
| July | 87.5% | 100.0% | ▲ 14.3% |
| August | 78.6% | – | – |
| September | 90.9% | – | – |
| October | 60.8% | – | in progress |
| November | 68.0% | – | – |
| December | 63.0% | – | – |
| Year-to-date average (Jan–Jul) | 87.7% | 86.2% | ▼ 1.8% |
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 | 5 | – |
| February | 0 | 0 | – |
| March | 1 | 4 | ▲ 300.0% |
| April | 3 | 2 | ▼ 33.3% |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 6 | 12 | ▲ 100.0% |
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 94.7% 485
- Cancelled 5.3% 27
Share of all recorded flights in the period, all legs. · Nov 9, 2024 → Jul 25, 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 |
|---|---|---|---|---|
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 40.1 min | 66.0% | 105 |
| BOS LGA Boston Logan International Airport – LaGuardia Airport | 296 | 1.7 min | 86.0% | 58 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | -3.6 min | 95.9% | 49 |
| BUF PHL Buffalo Niagara International Airport – Philadelphia International Airport | 449 | -0.7 min | 93.2% | 44 |
| MSN DCA Dane County Regional Truax Field – Ronald Reagan Washington National Airport | 1,136 | 9.1 min | 90.0% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 4 | 4 | 100.0% | 0 |
| December 2024 | 30 | 30 | 80.0% | 0 |
| January 2025 | 13 | 13 | 92.3% | 0 |
| February 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 5 | 4 | 75.0% | 1 |
| April 2025 | 56 | 53 | 90.6% | 3 |
| May 2025 | 50 | 49 | 87.8% | 1 |
| June 2025 | 37 | 37 | 81.1% | 0 |
| July 2025 | 25 | 24 | 87.5% | 1 |
| August 2025 | 15 | 14 | 78.6% | 1 |
| September 2025 | 22 | 22 | 90.9% | 0 |
| October 2025 | 53 | 51 | 60.8% | 2 |
| November 2025 | 29 | 25 | 68.0% | 4 |
| December 2025 | 29 | 27 | 63.0% | 2 |
| January 2026 | 30 | 25 | 76.0% | 5 |
| February 2026 | 14 | 14 | 64.3% | 0 |
| March 2026 | 35 | 31 | 77.4% | 4 |
| April 2026 | 32 | 30 | 90.0% | 2 |
| May 2026 | 22 | 22 | 95.5% | 0 |
| June 2026 | 4 | 4 | 100.0% | 0 |
| July 2026 | 3 | 2 | 100.0% | 1 |