YX5666
YX5666 (Republic Airways) is a multi-stop service on 10 routes, busiest Boston to Washington. Of 699 departures recorded from October 2024 to July 2026, 76.5% left on time, according to the US BTS.
- On-time departures76.5%of 699 flights
- Average delay13.8 min
- July 202630▼ 48.3%vs July 2025
- Cancelled3.7%
- Legs flown under this number10
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 | 30 | 26 | ▼ 13.3% |
| February | 28 | 24 | ▼ 14.3% |
| March | 31 | 27 | ▼ 12.9% |
| April | 26 | 26 | 0.0% |
| May | 26 | 28 | ▲ 7.7% |
| June | 49 | 30 | ▼ 38.8% |
| July | 58 | 30 | ▼ 48.3% |
| August | 54 | – | – |
| September | 19 | – | – |
| October | 26 | – | in progress |
| November | 51 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 248 | 191 | ▼ 23.0% |
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 | 89.3% | 87.5% | ▼ 2.0% |
| February | 85.2% | 50.0% | ▼ 41.3% |
| March | 96.8% | 52.0% | ▼ 46.3% |
| April | 57.7% | 56.0% | ▼ 2.9% |
| May | 42.3% | 59.3% | ▲ 40.1% |
| June | 93.9% | 57.1% | ▼ 39.1% |
| July | 84.5% | 52.0% | ▼ 38.4% |
| August | 87.0% | – | – |
| September | 89.5% | – | – |
| October | 92.0% | – | in progress |
| November | 78.7% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 78.5% | 59.1% | ▼ 24.7% |
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 | 2 | 2 | 0.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 2 | – |
| April | 0 | 1 | – |
| May | 0 | 1 | – |
| June | 0 | 2 | – |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 3 | 15 | ▲ 400.0% |
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 96.3% 673
- Cancelled 3.7% 26
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS DCA Boston Logan International Airport – Ronald Reagan Washington National Airport | 641 | 24.4 min | 64.0% | 313 |
| DCA LGA Ronald Reagan Washington National Airport – LaGuardia Airport | 345 | 3.5 min | 89.1% | 96 |
| LGA ORF LaGuardia Airport – Norfolk International Airport | 476 | 1.2 min | 87.8% | 90 |
| ORF LGA Norfolk International Airport – LaGuardia Airport | 476 | 4.8 min | 88.9% | 81 |
| LGA SAV LaGuardia Airport – Savannah Hilton Head International Airport | 1,163 | 1.2 min | 89.5% | 41 |
| SAV LGA Savannah Hilton Head International Airport – LaGuardia Airport | 1,163 | 20.8 min | 67.6% | 40 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 76.5% | 0 |
| November 2024 | 23 | 23 | 91.3% | 0 |
| December 2024 | 25 | 24 | 87.5% | 1 |
| January 2025 | 30 | 28 | 89.3% | 2 |
| February 2025 | 28 | 27 | 85.2% | 1 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 26 | 26 | 57.7% | 0 |
| May 2025 | 26 | 26 | 42.3% | 0 |
| June 2025 | 49 | 49 | 93.9% | 0 |
| July 2025 | 58 | 58 | 84.5% | 0 |
| August 2025 | 54 | 54 | 87.0% | 0 |
| September 2025 | 19 | 19 | 89.5% | 0 |
| October 2025 | 26 | 25 | 92.0% | 1 |
| November 2025 | 51 | 47 | 78.7% | 4 |
| December 2025 | 45 | 43 | 76.7% | 2 |
| January 2026 | 26 | 24 | 87.5% | 2 |
| February 2026 | 24 | 22 | 50.0% | 2 |
| March 2026 | 27 | 25 | 52.0% | 2 |
| April 2026 | 26 | 25 | 56.0% | 1 |
| May 2026 | 28 | 27 | 59.3% | 1 |
| June 2026 | 30 | 28 | 57.1% | 2 |
| July 2026 | 30 | 25 | 52.0% | 5 |