YX4349
YX4349 (Republic Airways) is a multi-stop service on 30 routes, busiest Boston to Washington. Of 620 departures recorded from November 2024 to July 2026, 83.6% left on time, according to the US BTS.
- On-time departures83.6%of 620 flights
- Average delay6.7 min
- July 202630▲ 0.0%vs July 2025
- Cancelled5.7%
- Legs flown under this number30
according to the US BTS · Nov 5, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 21 of 21 periods have data
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 | 27 | 29 | ▲ 7.4% |
| February | 28 | 42 | ▲ 50.0% |
| March | 30 | 61 | ▲ 103.3% |
| April | 29 | 36 | ▲ 24.1% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 30 | 30 | 0.0% |
| August | 27 | – | – |
| September | 21 | – | – |
| October | 5 | – | in progress |
| November | 32 | – | – |
| December | 23 | – | – |
| Year to date (Jan–Jul) | 204 | 259 | ▲ 27.0% |
according to the US BTS · November 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 21 of 21 periods have data
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 | 100.0% | 85.2% | ▼ 14.8% |
| February | 84.6% | 76.2% | ▼ 10.0% |
| March | 100.0% | 67.2% | ▼ 32.8% |
| April | 93.1% | 88.2% | ▼ 5.2% |
| May | 75.9% | 96.7% | ▲ 27.4% |
| June | 50.0% | 93.3% | ▲ 86.7% |
| July | 61.9% | 83.3% | ▲ 34.6% |
| August | 85.2% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 78.6% | – | – |
| December | 76.2% | – | – |
| Year-to-date average (Jan–Jul) | 80.8% | 84.3% | ▲ 4.4% |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 21 of 21 periods have data
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 21 of 21 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 2 | ▲ 100.0% |
| February | 2 | 0 | ▼ 100.0% |
| March | 2 | 3 | ▲ 50.0% |
| April | 0 | 2 | – |
| May | 1 | 1 | 0.0% |
| June | 6 | 0 | ▼ 100.0% |
| July | 9 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 21 | 8 | ▼ 61.9% |
according to the US BTS · November 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 94.4% 585
- Cancelled 5.6% 35
Share of all recorded flights in the period, all legs. · Nov 5, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS DCA Boston Logan International Airport – Ronald Reagan Washington National Airport | 641 | 18.2 min | 75.5% | 125 |
| BOS LGA Boston Logan International Airport – LaGuardia Airport | 296 | -5.9 min | 98.0% | 101 |
| LGA ORF LaGuardia Airport – Norfolk International Airport | 476 | 2.8 min | 92.0% | 52 |
| ORD BUF Chicago O'Hare International Airport – Buffalo Niagara International Airport | 760 | 10.8 min | 74.5% | 50 |
| BUF ORD Buffalo Niagara International Airport – Chicago O'Hare International Airport | 760 | 23.5 min | 62.5% | 50 |
| PHL PIT Philadelphia International Airport – Pittsburgh International Airport | 430 | -3.2 min | 95.4% | 44 |
| JFK BOS John F. Kennedy International Airport – Boston Logan International Airport | 300 | 8.7 min | 76.5% | 39 |
| PHL CLE Philadelphia International Airport – Cleveland Hopkins International Airport | 583 | 10.2 min | 73.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 26 | 26 | 100.0% | 0 |
| December 2024 | 23 | 23 | 87.0% | 0 |
| January 2025 | 27 | 26 | 100.0% | 1 |
| February 2025 | 28 | 26 | 84.6% | 2 |
| March 2025 | 30 | 28 | 100.0% | 2 |
| April 2025 | 29 | 29 | 93.1% | 0 |
| May 2025 | 30 | 29 | 75.9% | 1 |
| June 2025 | 30 | 24 | 50.0% | 6 |
| July 2025 | 30 | 21 | 61.9% | 9 |
| August 2025 | 27 | 27 | 85.2% | 0 |
| September 2025 | 21 | 21 | 100.0% | 0 |
| October 2025 | 5 | 5 | 100.0% | 0 |
| November 2025 | 32 | 28 | 78.6% | 4 |
| December 2025 | 23 | 21 | 76.2% | 2 |
| January 2026 | 29 | 27 | 85.2% | 2 |
| February 2026 | 42 | 42 | 76.2% | 0 |
| March 2026 | 61 | 58 | 67.2% | 3 |
| April 2026 | 36 | 34 | 88.2% | 2 |
| May 2026 | 31 | 30 | 96.7% | 1 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 30 | 30 | 83.3% | 0 |