Flight profile · JetBlue
B6377
Fort Lauderdale (FLL) to San Francisco (SFO) · scheduled 7:00 AM – 12:40 PM
How B6377 performs
452 operations, 2024-01-04 to 2026-06-30.
B6377 arrived on time 80.4% of the time, against 76.1% for all FLL → SFO flights — this specific departure is 4.3 percentage points better than the route as a whole. Against JetBlue’s own flights on this route it is 5.8 points better.
Source: US DOT Bureau of Transportation Statistics · 452 operations between 2024-01-04 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| B6377 | 80.4% | 0.22% | -7 min | 7.3% | 452 |
| JetBlue on FLL → SFO | 74.6% | 0.49% | -6 min | 9.3% | 2,436 |
| All FLL → SFO flights | 76.1% | 0.83% | -6 min | 8.5% | 3,983 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-04 to 2026-06-30
Other routes B6377 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| BOS→LAS Boston to Las Vegas | 2023-09-06 – 2024-12-18 | 98 | 84.7% |
| BDL→FLL Hartford to Fort Lauderdale | 2023-11-16 – 2023-11-27 | 11 | — |
Because the same number has served different journeys, the statistics above describe only the route B6377 currently operates. Blending them would produce an average of two different flights.
Why B6377 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for B6377 on FLL → SFO. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on FLL → SFO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| B6577 | JetBlue | 80.1% | 9 min early | 820 |
| B6277 | JetBlue | 67.5% | 1 min early | 1,087 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 452 records of B6377 operating FLL → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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