Flight profile · JetBlue
B6308
New York (JFK) to Portland (PWM) · scheduled 10:45 PM – 12:17 AM
How B6308 performs
438 operations, 2023-07-01 to 2026-06-28.
B6308 arrived on time 56.8% of the time, against 77.6% for all JFK → PWM flights — this specific departure is 20.8 percentage points worse than the route as a whole. Against JetBlue’s own flights on this route it is 13.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 438 operations between 2023-07-01 to 2026-06-28
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| B6308 | 56.8% | 9.13% | 7 min | 22.1% | 438 |
| JetBlue on JFK → PWM | 69.9% | 4.64% | -6 min | 14.0% | 1,035 |
| All JFK → PWM flights | 77.6% | 4.61% | -10 min | 9.0% | 2,234 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-28
Other routes B6308 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 |
|---|---|---|---|
| PBI→BDL West Palm Beach to Hartford | 2024-12-03 – 2024-12-18 | 16 | — |
Because the same number has served different journeys, the statistics above describe only the route B6308 currently operates. Blending them would produce an average of two different flights.
Why B6308 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for B6308 on JFK → PWM. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 438 records of B6308 operating JFK → PWM, 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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