Carrier route record
B6JFK→JAX
JetBlue Airways · New York to Jacksonville
- Flights
- 891
- Period
- September 2025 to August 2026
- Share of route
- 75%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on JFK to JAX carries a cancellation problem, not just a delay problem: 4.9% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 891 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate JetBlue on JFK to JAX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
73.4%
Arrivals under 15 minutes late, of 846 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
4.94%
National rate is 1.89%
Whole route
74.0%
Every carrier on JFK to JAX, 1,187 flights
These figures cover 891 flights between September 2025 and August 2026. Beyond the headline rate, 11.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
JetBlue against every carrier on JFK to JAX
JetBlue flew 891 of the 1,187 flights on JFK to JAX, most of the route. Its 73.4% on time is about level with the route as a whole at 74.0%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Republic at 90.0% to Delta at 73.4%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 40 | 90.0% | 74 min | 0.00% | A+ |
| JetBlue Airways (this page) | 891 | 73.4% | 73 min | 4.94% | C− |
| Delta Air Linesthin sample | 256 | 73.4% | 107 min | 4.30% | C− |
Flight by flight
JetBlue flight numbers on JFK to JAX
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 34 points, against half a point between the best and worst carrier.
- 5am–8am138 flights84.7%
- 8am–11am137 flights89.6%
- 11am–2pm61 flights55.9%
- 2pm–5pm245 flights69.0%
- 5pm–8pm104 flights79.6%
- 8pm–5am206 flights61.9%
Scale runs 45% to 95%.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 55.9% on time against 89.6% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 2pm–5pm window is the busiest, with 245 flights scheduled in it.
Across the year
JetBlue on JFK to JAX through the year
July is the worst month at 53.1% on time, 37 points below May, the best at 90.3%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. December was the busiest month here, with 92 flights.
Across the week, Tuesday is the strongest day at 82.7% on time and Sunday the weakest at 64.8%, a spread of 18 points.
Arrival by arrival
How late JetBlue on JFK to JAX runs when it is late
JetBlue on JFK to JAX often beats the schedule: 277 of 846 completed flights, 33%, arrived 15 minutes or more early. The 225 late arrivals split 64 under half an hour, 66 between 30 and 60 minutes, and 95 an hour or more.
- 15+ min early277 flights32.7%
- Within 15 min344 flights40.7%
- 15–29 min late64 flights7.6%
- 30–59 min late66 flights7.8%
- 1–2 hours late58 flights6.9%
- 2+ hours late37 flights4.4%
Scale runs 0% to 100%.
Share of 846 completed flights by arrival against schedule.
47 of 227 late departures made up the time and arrived on time, 21% of them. In the other direction, 45 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at JAX.
The worst days
Worst days for JetBlue on JFK to JAX
The latest arrival of the period was on 9 November 2025, 5 hours 27 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 November 2025 | 5 hours 27 minutes | Late-arriving aircraft |
| 4 April 2026 | 5 hours 17 minutes | Carrier |
| 6 July 2026 | 5 hours 12 minutes | National Airspace System |
| 3 August 2026 | 5 hours 3 minutes | Late-arriving aircraft |
| 26 January 2026 | 4 hours 57 minutes | Late-arriving aircraft |
Delay causes
Why JetBlue runs late on this route
Late-arriving aircraft accounts for 44% of the 16,000 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Late-arriving aircraft
- 31%Carrier
- 22%National Airspace System
- 2%Extreme weather
- 0%Security
44% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 16,000 reported delay minutes here, that single category outweighs weather by 19 to one. The split is drawn from 16,318 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.6% on time here.
Cancellations run at 4.94%, against 1.89% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
11.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 829 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 77.2% on time across 891 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
One caution: this is a thin sample. 891 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking JetBlue on JFK to JAX
Put together: the delay figures matter less here than the 4.94% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 846 completed flights over 12 months sit behind that.
Related
Where to go next
- JFK to JAX, every carrier
- JetBlue on JAX to JFK, the return leg
- Delta Air Lines on JFK to JAX73.4%
- JetBlue Airways network-wide record
- John F. Kennedy International (JFK) delay statistics
- Jacksonville International (JAX) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.