Flight profile · JetBlue
B61333
Boston (BOS) to San Francisco (SFO) · scheduled 6:05 AM – 10:32 AM
How B61333 performs
570 operations, 2023-07-01 to 2026-06-30.
B61333 arrived on time 84.2% of the time, against 75.0% for all BOS → SFO flights — this specific departure is 9.2 percentage points better than the route as a whole. Against JetBlue’s own flights on this route it is 11.8 points better.
Source: US DOT Bureau of Transportation Statistics · 570 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| B61333 | 84.2% | 0.00% | -12 min | 4.2% | 570 |
| JetBlue on BOS → SFO | 72.4% | 0.70% | -6 min | 9.7% | 4,846 |
| All BOS → SFO flights | 75.0% | 0.96% | -6 min | 8.6% | 13,723 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes B61333 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.
Because the same number has served different journeys, the statistics above describe only the route B61333 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
27 min late
against a median of 12 min early
Percentiles over 570 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why B61333 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
screening or terminal security incidents
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for B61333 on BOS → 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 BOS → SFO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1008 | United Airlines | 88.0% | 12 min early | 954 |
| UA1187 | United Airlines | 81.0% | 12 min early | 604 |
| DL977 | Delta Air Lines | 80.8% | 8 min early | 862 |
| B61833 | JetBlue | 80.2% | 13 min early | 681 |
| B6133 | JetBlue | 80.2% | 9 min early | 660 |
| B6733 | JetBlue | 69.4% | 3 min early | 763 |
| AS357 | Alaska Airlines | 68.6% | 2 min early | 636 |
| DL475 | Delta Air Lines | 68.4% | 3 min early | 744 |
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 570 records of B61333 operating BOS → 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.
Full methodology · Report a problem
Analysis last recomputed