Best Time to Fly ISP to TPA: On-Time Stats by Hour & Airline
Long Island MacArthur → Tampa International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.4% of Islip (ISP) to Tampa (TPA) flights arrived on time (445 scheduled flights). That is 5.2 points below the national average of 77.6%.
Frontier Airlines was the most punctual of the 3 airlines on the route at 75.7%, while JetBlue trailed at 64.1%.
October has been the best month (93% on time) and Sunday the weakest day of the week (66%).
3.8% of flights were cancelled, versus 1.8% nationally.
ISP to TPA 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 | 75.7% | 80 min | 3.8% | 265 |
| Southwest Airlines | 70.5% | 60 min | 3.1% | 98 |
| JetBlue | 64.1% | 42 min | 4.9% | 82 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ISP to TPA
On-time arrival % by scheduled departure hour (local time), 929 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 10 | |
| 6am–7am | 80.8% | 6.0% | 50 |
| 7am–8am | Limited data | 12 | |
| 8am–9am | 77.4% | 3.1% | 32 |
| 9am–10am | 92.1% | 9.5% | 42 |
| 10am–11am | 87.8% | 2.4% | 42 |
| 11am–12pm | 76.7% | 4.4% | 90 |
| 12pm–1pm | 74.8% | 2.2% | 134 |
| 1pm–2pm | 74.0% | 1.3% | 78 |
| 2pm–3pm | 61.3% | 4.6% | 130 |
| 3pm–4pm | 64.5% | 3.1% | 32 |
| 4pm–5pm | 72.7% | 0.0% | 55 |
| 5pm–6pm | 64.1% | 0.0% | 39 |
| 6pm–7pm | 56.7% | 3.2% | 31 |
| 7pm–8pm | 71.4% | 1.4% | 71 |
| 8pm–9pm | 60.4% | 1.9% | 54 |
| 9pm–10pm | Limited data | 23 | |
| 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 ISP to TPA
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) | 48.2% | -26.7 pts | 6.7% | 60 |
| Summer peak (Jun 15 - Aug 15) | 63.3% | -11.7 pts | 3.0% | 132 |
| All other days | 75.0% | — | 3.1% | 713 |
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).