Flight profile · JetBlue
B6491
Buffalo (BUF) to Los Angeles (LAX) · scheduled 8:40 PM – 8:56 PM
How B6491 performs
607 operations, September 2023 – July 2026.
Source: US DOT Bureau of Transportation Statistics · 607 operations, September 2023 – July 2026 · If B6491 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back — the refund checker walks through eligibility.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| B6491 | 67.1% | 1.48% | -4 min | 12.0% | 607 |
| JetBlue on BUF → LAX | 67.1% | 1.48% | -4 min | 12.0% | 607 |
| All BUF → LAX flights | 67.1% | 1.48% | -4 min | 12.0% | 608 |
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
Why B6491 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, fueling — 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 B6491 on BUF → LAX. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
From pushback to gate
When it leaves BUF late, does that still matter by the time it reaches LAX?
B6491 pushes back an average of 20.7 minutes late and reaches the gate at LAX an average of 11.9 minutes late. The 8.8 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 13.7 minutes on the taxiways at BUF is about what any departure from the airport in that hour spends.
On arrival at LAX, B6491 spends 11.4 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at LAX spends on the ground before reaching the gate.
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached LAX. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 1,423 departures from BUF scheduled in the clock hour B6491 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at LAX (595,170 flights), not just B6491’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
The hour it leaves BUF
Part of any flight’s record belongs to the clock rather than to the flight. B6491 has one departure time, so this is what that time is worth.
On-time arrival rate. 1,423 departures from BUF are scheduled in the 8 PM–9 PM hour over the period, against 65,592 across the whole day.
B6491 is scheduled out of BUF at 8:40 PM, in the 8 PM–9 PM bank. Departures from BUF in that hour arrive on time 65.7% of the time against 79.4% across the airport’s whole day — the slot alone is worth 13.7 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from BUF to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Hours below 120 departures are not scored.
Other routes B6491 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→TPA Boston to Tampa | September 4, 2025 – April 28, 2026 | 57 | — |
Because the same number has served different journeys, the statistics above describe only the route B6491 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.
73 min late
against a median of 4 min early
B6491 has an average that understates its risk: a typical arrival is 4 min early, but the worst tenth are 77 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 607 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 607 records of B6491 operating BUF → LAX, 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 · Data sources · Report a problem
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