B6734
B6734 (JetBlue Airways) flies San Francisco to Boston. Of 605 departures recorded from October 2024 to July 2026, 78.0% left on time, according to the US BTS.
- On-time departures78.0%of 605 flights
- Average delay13.0 min
- July 202631▲ 14.8%vs July 2025
- Cancelled2.2%
according to the US BTS · Oct 13, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 31 | ▲ 14.8% |
| February | 26 | 28 | ▲ 7.7% |
| March | 26 | 31 | ▲ 19.2% |
| April | 30 | 30 | 0.0% |
| May | 31 | 29 | ▼ 6.5% |
| June | 27 | 30 | ▲ 11.1% |
| July | 27 | 31 | ▲ 14.8% |
| August | 26 | – | – |
| September | 18 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 194 | 210 | ▲ 8.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 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 | 85.2% | 82.8% | ▼ 2.9% |
| February | 61.5% | 80.8% | ▲ 31.2% |
| March | 88.5% | 80.7% | ▼ 8.8% |
| April | 86.7% | 83.3% | ▼ 3.9% |
| May | 77.4% | 89.7% | ▲ 15.8% |
| June | 85.2% | 62.1% | ▼ 27.1% |
| July | 59.3% | 51.9% | ▼ 12.5% |
| August | 92.3% | – | – |
| September | 77.8% | – | – |
| October | 80.8% | – | in progress |
| November | 63.0% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 77.7% | 75.9% | ▼ 2.3% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 9 |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 97.9% 592
- Cancelled 2.1% 13
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO BOS San Francisco International Airport – Boston Logan International Airport | 4,341 | 13.0 min | 78.0% | 605 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 25 | 25 | 80.0% | 0 |
| December 2024 | 28 | 28 | 85.7% | 0 |
| January 2025 | 27 | 27 | 85.2% | 0 |
| February 2025 | 26 | 26 | 61.5% | 0 |
| March 2025 | 26 | 26 | 88.5% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 27 | 27 | 85.2% | 0 |
| July 2025 | 27 | 27 | 59.3% | 0 |
| August 2025 | 26 | 26 | 92.3% | 0 |
| September 2025 | 18 | 18 | 77.8% | 0 |
| October 2025 | 27 | 26 | 80.8% | 1 |
| November 2025 | 29 | 27 | 63.0% | 2 |
| December 2025 | 31 | 30 | 76.7% | 1 |
| January 2026 | 31 | 29 | 82.8% | 2 |
| February 2026 | 28 | 26 | 80.8% | 2 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 29 | 29 | 89.7% | 0 |
| June 2026 | 30 | 29 | 62.1% | 1 |
| July 2026 | 31 | 27 | 51.9% | 4 |