Flight profile · JetBlue
B61310
Jacksonville (JAX) to Boston (BOS) · scheduled 9:55 AM – 12:35 PM
How B61310 performs
716 operations, October 2023 – July 2026.
B61310 arrived on time 73.3% of the time, against 74.4% for all JAX → BOS flights, so this departure is 1.1 percentage points worse than the route as a whole. Against JetBlue’s own flights on this route it is 3.3 points better.
Source: US DOT Bureau of Transportation Statistics · 716 operations, October 2023 – July 2026 · If B61310 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where B61310 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| B61310 | 73.3% | 1.82% | -7 min | 12.8% | 716 |
| JetBlue on JAX → BOS | 70.0% | 2.12% | -4 min | 14.8% | 1,838 |
| All JAX → BOS flights | 74.4% | 1.87% | -7 min | 11.6% | 4,383 |
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
Why B61310 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for B61310 on JAX → BOS. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies B61310 comes in late, and what that does to the departure.
The aircraft flying B61310 came in 15 or more minutes late on 16% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into JAX just before it, using the tail number in the DOT file, 687 of 703 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| B61310 | 16% |
| Network, same turn | 18% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 45 to 59 minutes. How often B61310’s aircraft landed 15 or more minutes late is about the same as the network’s. There are not enough departures in both groups to compare how it left.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – July 2026
From pushback to gate
When it leaves JAX late, does that still matter by the time it reaches BOS?
B61310 pushes back an average of 20.0 minutes late and reaches the gate at BOS an average of 12.4 minutes late. The 7.7 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. It spends 16.1 minutes on the taxiways at JAX, 1.9 minutes longer than a typical JAX departure in the same hour.
On arrival at BOS, B61310 spends 7.3 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 1.6 minutes shorter than a typical BOS arrival (9.0 min).
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 BOS. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 4,396 departures from JAX scheduled in the clock hour B61310 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at BOS (440,886 flights), not just B61310’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – July 2026
The hour it leaves JAX
Part of any flight’s record belongs to the clock rather than to the flight. B61310 has one departure time, so this is what that time is worth.
On-time arrival rate. 4,396 departures from JAX are scheduled in the 9 AM–10 AM hour over the period, against 90,308 across the whole day.
B61310 is scheduled out of JAX at 9:55 AM, in the 9 AM–10 AM bank. Departures from JAX in that hour arrive on time 88.8% of the time against 80.0% across the airport’s whole day — the slot alone is worth 8.7 points better before anything about this particular flight is considered.
The two airport figures cover every departure from JAX 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 · October 2023 – July 2026 · Hours below 120 departures are not scored.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
70 min late
against a median of 7 min early
B61310 has an average that understates its risk: a typical arrival is 7 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 716 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 716 records of B61310 operating JAX → BOS, 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
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed