Best Time to Fly MCO to ISP: On-Time Stats by Hour & Airline
Orlando International → Long Island MacArthur
Data through July 2026 · Last updated October 18, 2026
1,423 flights were scheduled from Orlando (MCO) to Islip (ISP) in the last 12 months, and 75.6% of those that flew arrived on time, 2.1 points below the US average of 77.6%.
Among 3 airlines, JetBlue led with 86.5% on time and Southwest Airlines was last with 68.0%.
Over 24 months, Tuesday was the most reliable day (87% on time) and July the worst month (69%).
The cancellation rate was 1.8% (US average 1.8%).
MCO to ISP on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue | 86.5% | 58 min | 1.3% | 392 |
| Frontier Airlines | 77.7% | 73 min | 2.5% | 364 |
| Southwest Airlines | 68.0% | 51 min | 1.6% | 667 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCO to ISP
On-time arrival % by scheduled departure hour (local time), 2,852 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.5% | 1.4% | 74 |
| 6am–7am | 93.4% | 2.9% | 204 |
| 7am–8am | 91.1% | 0.0% | 360 |
| 8am–9am | 89.8% | 0.6% | 337 |
| 9am–10am | 85.7% | 0.7% | 289 |
| 10am–11am | 79.7% | 0.7% | 154 |
| 11am–12pm | 64.7% | 1.2% | 86 |
| 12pm–1pm | 78.2% | 1.4% | 144 |
| 1pm–2pm | 70.7% | 1.5% | 135 |
| 2pm–3pm | 69.8% | 0.0% | 43 |
| 3pm–4pm | 79.2% | 1.4% | 74 |
| 4pm–5pm | 67.6% | 1.4% | 144 |
| 5pm–6pm | 70.2% | 2.4% | 125 |
| 6pm–7pm | 59.5% | 0.8% | 117 |
| 7pm–8pm | 57.2% | 1.9% | 263 |
| 8pm–9pm | 53.0% | 1.9% | 206 |
| 9pm–10pm | 52.6% | 0.0% | 38 |
| 10pm–11pm | 79.0% | 3.4% | 59 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCO to ISP
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 75.9% | -4.1 pts | 0.0% | 59 |
| Christmas & New Year (Dec 20 - Jan 3) | 65.9% | -14.0 pts | 2.1% | 142 |
| Summer peak (Jun 15 - Aug 15) | 67.2% | -12.7 pts | 0.8% | 486 |
| All other days | 79.9% | — | 1.3% | 2,165 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).