YX4648
YX4648 (Republic Airways) is a multi-stop service on 14 routes, busiest Boston to Washington. Of 393 departures recorded from October 2024 to July 2026, 85.3% left on time, according to the US BTS.
- On-time departures85.3%of 393 flights
- Average delay7.7 min
- July 20262▼ 75.0%vs July 2025
- Cancelled2.8%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 31 | ▲ 675.0% |
| February | 4 | 28 | ▲ 600.0% |
| March | 5 | 41 | ▲ 720.0% |
| April | 3 | 32 | ▲ 966.7% |
| May | – | 27 | – |
| June | 25 | 22 | ▼ 12.0% |
| July | 8 | 2 | ▼ 75.0% |
| August | 21 | – | – |
| September | 3 | – | – |
| October | – | – | in progress |
| November | 18 | – | – |
| December | 29 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 75.9% | ▼ 24.1% |
| February | 75.0% | 73.1% | ▼ 2.6% |
| March | 100.0% | 69.2% | ▼ 30.8% |
| April | 100.0% | 84.4% | ▼ 15.6% |
| May | – | 81.5% | – |
| June | 96.0% | 90.5% | ▼ 5.7% |
| July | 100.0% | 100.0% | 0.0% |
| August | 95.0% | – | – |
| September | 100.0% | – | – |
| October | – | – | in progress |
| November | 94.1% | – | – |
| December | 75.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 1 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
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 97.2% 382
- Cancelled 2.8% 11
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 2, 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 |
|---|---|---|---|---|
| BOS DCA Boston Logan International Airport – Ronald Reagan Washington National Airport | 641 | 15.6 min | 77.7% | 90 |
| SYR DCA Syracuse Hancock International Airport – Ronald Reagan Washington National Airport | 480 | 2.0 min | 93.1% | 59 |
| LGA BUF LaGuardia Airport – Buffalo Niagara International Airport | 469 | -0.4 min | 86.4% | 44 |
| BTV PHL Patrick Leahy Burlington International Airport – Philadelphia International Airport | 540 | 7.2 min | 97.6% | 43 |
| BNA DCA Nashville International Airport – Ronald Reagan Washington National Airport | 903 | 15.3 min | 86.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 48 | 48 | 97.9% | 0 |
| December 2024 | 22 | 22 | 81.8% | 0 |
| January 2025 | 4 | 4 | 100.0% | 0 |
| February 2025 | 4 | 4 | 75.0% | 0 |
| March 2025 | 5 | 5 | 100.0% | 0 |
| April 2025 | 3 | 3 | 100.0% | 0 |
| June 2025 | 25 | 25 | 96.0% | 0 |
| July 2025 | 8 | 7 | 100.0% | 1 |
| August 2025 | 21 | 20 | 95.0% | 1 |
| September 2025 | 3 | 3 | 100.0% | 0 |
| November 2025 | 18 | 17 | 94.1% | 1 |
| December 2025 | 29 | 28 | 75.0% | 1 |
| January 2026 | 31 | 29 | 75.9% | 2 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 41 | 39 | 69.2% | 2 |
| April 2026 | 32 | 32 | 84.4% | 0 |
| May 2026 | 27 | 27 | 81.5% | 0 |
| June 2026 | 22 | 21 | 90.5% | 1 |
| July 2026 | 2 | 2 | 100.0% | 0 |