Carrier route record
B6MCO→ISP
JetBlue Airways · Orlando to Islip
- 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 MCO to ISP earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 416 flights, with a median arrival 10 minutes early.
Set against the rest of the country, JetBlue's MCO to ISP record is 9 points better than the US average of 77.3%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.
Key figures
On time
86.3%
Arrivals under 15 minutes late, of 409 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
1.20%
National rate is 1.89%
Whole route
76.2%
Every carrier on MCO to ISP, 1,441 flights
These figures cover 416 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
JetBlue against every carrier on MCO to ISP
JetBlue flew 416 of the 1,441 flights on MCO to ISP, about 29% of it. Its 86.3% on time is 10 points better than the route as a whole, which runs 76.2%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from JetBlue at 86.3% to Southwest at 67.3%. 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 | 86.3% | 69 min | 1.20% | A |
| Frontier Airlinesthin sample | 360 | 81.0% | 62 min | 2.22% | B |
| Southwest Airlines | 665 | 67.3% | 52 min | 1.65% | C |
Flight by flight
JetBlue flight numbers on MCO to ISP
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 45 points, against half a point between the best and worst carrier.
- 5am–8am189 flights92.9%
- 8am–11am73 flights94.5%
- 11am–2pm81 flights85.2%
- 2pm–5pm30 flights83.3%
- 5pm–8pm5 flights—
- 8pm–5am38 flights50.0%
Scale runs 40% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 50.0% on time, against 94.5% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 189 flights scheduled in it.
Across the year
JetBlue on MCO to ISP through the year
July is the worst month at 71.4% on time, 26 points below November, the best at 97.0%. 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. August was the busiest month here, with 55 flights.
Across the week, Sunday is the strongest day at 94.5% on time and Saturday the weakest at 79.4%, a spread of 15 points.
Arrival by arrival
How late JetBlue on MCO to ISP runs when it is late
JetBlue on MCO to ISP often beats the schedule: 145 of 409 completed flights, 35%, arrived 15 minutes or more early. The 56 late arrivals split 21 under half an hour, 12 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early145 flights35.5%
- Within 15 min208 flights50.9%
- 15–29 min late21 flights5.1%
- 30–59 min late12 flights2.9%
- 1–2 hours late14 flights3.4%
- 2+ hours late9 flights2.2%
Scale runs 0% to 100%.
Share of 409 completed flights by arrival against schedule.
8 of 51 late departures made up the time and arrived on time, 16% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for JetBlue on MCO to ISP
The latest arrival of the period was on 26 August 2026, 4 hours 45 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 August 2026 | 4 hours 45 minutes | Late-arriving aircraft |
| 18 February 2026 | 3 hours 28 minutes | Late-arriving aircraft |
| 25 July 2026 | 3 hours 22 minutes | Late-arriving aircraft |
| 10 August 2026 | 3 hours 19 minutes | Late-arriving aircraft |
| 3 September 2025 | 2 hours 33 minutes | Carrier |
Delay causes
Why JetBlue runs late on this route
Carrier accounts for 43% of the 3,847 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 35%Late-arriving aircraft
- 18%National Airspace System
- 5%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,847 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 3,847 reported delay minutes.
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,640 of the 3,847 delay minutes reported here.
Cancellations sit at 1.20% against a national 1.89%, which is ordinary. Diversions add another 0.48%.
Connections and stage length
What a delay here costs
5.6% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
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 76.7% on time across 416 flights, 10 points below 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 MCO to ISP
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 86.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 409 completed flights over 12 months sit behind that.
Related
Where to go next
- MCO to ISP, every carrier
- JetBlue on ISP to MCO, the return leg
- Frontier Airlines on MCO to ISP81.0%
- Southwest Airlines on MCO to ISP67.3%
- 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.