Carrier route record
B6ISP→MCO
JetBlue Airways · Islip to Orlando
- Flights
- 416
- Period
- September 2025 to August 2026
- Share of route
- 29%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on ISP to MCO lands a B, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 416 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate JetBlue on ISP to MCO from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.7%
Arrivals under 15 minutes late, of 403 completed flights
Avg delay
85 min
Across delayed arrivals only, not all flights
Cancelled
1.68%
National rate is 1.89%
Whole route
74.4%
Every carrier on ISP to MCO, 1,442 flights
These figures cover 416 flights between September 2025 and August 2026. Beyond the headline rate, 10.4% 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 ISP to MCO
JetBlue flew 416 of the 1,442 flights on ISP to MCO, about 29% of it. Its 76.7% on time is 2 points better than the route as a whole, which runs 74.4%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from JetBlue at 76.7% to Southwest at 72.8%. One 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 |
|---|---|---|---|---|---|
| JetBlue Airways (this page) | 416 | 76.7% | 85 min | 1.68% | B |
| Frontier Airlinesthin sample | 360 | 74.9% | 86 min | 2.78% | C |
| Southwest Airlines | 666 | 72.8% | 59 min | 1.50% | C |
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 13 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am170 flights80.6%
- 11am–2pm97 flights79.1%
- 2pm–5pm102 flights73.0%
- 5pm–8pm46 flights67.4%
- 8pm–5am1 flights—
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 80.6% of the time, against 67.4% for the evening window. That is 13 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 170 flights scheduled in it.
Across the year
JetBlue on ISP to MCO through the year
Delays peak in April, when the on-time rate falls to 60.0%. March is the strongest month at 93.3%. Moving a flexible trip across that boundary buys 33 points. August was the busiest month here, with 55 flights.
Across the week, Wednesday is the strongest day at 82.3% on time and Saturday the weakest at 72.1%, a spread of 10 points.
Arrival by arrival
How late JetBlue on ISP to MCO runs when it is late
JetBlue on ISP to MCO often beats the schedule: 158 of 403 completed flights, 39%, arrived 15 minutes or more early. The 94 late arrivals split 29 under half an hour, 23 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early158 flights39.2%
- Within 15 min151 flights37.5%
- 15–29 min late29 flights7.2%
- 30–59 min late23 flights5.7%
- 1–2 hours late28 flights6.9%
- 2+ hours late14 flights3.5%
Scale runs 0% to 100%.
Share of 403 completed flights by arrival against schedule.
12 of 84 late departures made up the time and arrived on time, 14% of them. In the other direction, 22 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 MCO.
The worst days
Worst days for JetBlue on ISP to MCO
The latest arrival of the period was on 21 July 2026, 20 hours 34 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 July 2026 | 20 hours 34 minutes | Extreme weather |
| 28 November 2025 | 5 hours 39 minutes | Late-arriving aircraft |
| 26 August 2026 | 5 hours 15 minutes | Late-arriving aircraft |
| 27 December 2025 | 5 hours 6 minutes | National Airspace System |
| 21 April 2026 | 4 hours 54 minutes | Late-arriving aircraft |
Delay causes
Why JetBlue runs late on this route
Late-arriving aircraft accounts for 43% of the 7,981 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 28%National Airspace System
- 18%Extreme weather
- 11%Carrier
Extreme weather accounts for 18% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.9 times the usual weather exposure. The split is drawn from 7,981 reported delay minutes.
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,981 reported delay minutes here, that single category outweighs weather by 2 to one.
Cancellations sit at 1.68% against a national 1.89%, which is ordinary. Diversions add another 1.44%.
Connections and stage length
What a delay here costs
10.4% 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 971 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 86.3% on time across 416 flights, 10 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 10 points of difference.
One caution: this is a thin sample. 416 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 ISP to MCO
Put together: treat all of this as provisional. 416 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 403 completed flights over 12 months sit behind that.
Related
Where to go next
- ISP to MCO, every carrier
- JetBlue on MCO to ISP, the return leg
- Frontier Airlines on ISP to MCO74.9%
- Southwest Airlines on ISP to MCO72.8%
- JetBlue Airways network-wide record
- Orlando International (MCO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.