Best Time to Fly TPA to ISP: On-Time Stats by Hour & Airline
Tampa International → Long Island MacArthur
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.1% of Tampa (TPA) to Islip (ISP) flights arrived on time (442 scheduled flights). That is 2.6 points below the national average of 77.6%.
Frontier Airlines was the most punctual of the 3 airlines on the route at 79.5%, while JetBlue trailed at 68.3%.
September has been the best month (90% on time) and Sunday the weakest day of the week (71%).
2.7% of flights were cancelled, versus 1.8% nationally.
TPA 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 |
|---|---|---|---|---|
| Frontier Airlines | 79.5% | 87 min | 3.0% | 263 |
| Southwest Airlines | 68.8% | 35 min | 2.0% | 98 |
| JetBlue | 68.3% | 57 min | 2.5% | 81 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TPA to ISP
On-time arrival % by scheduled departure hour (local time), 926 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 17 | |
| 6am–7am | 97.0% | 8.3% | 36 |
| 7am–8am | 93.0% | 4.3% | 46 |
| 8am–9am | 94.6% | 2.6% | 38 |
| 9am–10am | 89.3% | 0.0% | 75 |
| 10am–11am | 76.3% | 4.5% | 155 |
| 11am–12pm | 68.0% | 2.6% | 77 |
| 12pm–1pm | 81.7% | 0.0% | 93 |
| 1pm–2pm | 77.4% | 0.0% | 62 |
| 2pm–3pm | 58.2% | 3.5% | 57 |
| 3pm–4pm | 75.8% | 0.0% | 92 |
| 4pm–5pm | 70.6% | 1.2% | 86 |
| 5pm–6pm | 73.0% | 0.0% | 37 |
| 6pm–7pm | Limited data | 10 | |
| 7pm–8pm | Limited data | 2 | |
| 8pm–9pm | Limited data | 6 | |
| 9pm–10pm | 64.5% | 6.1% | 33 |
| 10pm–11pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TPA 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) | Limited data | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 51.7% | -29.2 pts | 3.3% | 60 |
| Summer peak (Jun 15 - Aug 15) | 73.1% | -7.8 pts | 1.5% | 132 |
| All other days | 80.9% | — | 2.5% | 710 |
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).