Tampa (TPA) to Islip (ISP): On-Time Performance
Data through May 2026
When you fly TPA to ISP matters as much as anything else about the booking: the route swung from 93% on-time in September 2024 to just 58% in December 2024. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 64%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 1.3
- last 12 months
- Duration
- 2h 44m
- scheduled
- Distance
- 1,034 mi
Best airline from TPA to ISP
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Frontier Airlinesmost reliable | 79% | 18 min | 3.2% | 568 |
| Southwest Airlines | 76% | 13 min | 1.0% | 289 |
| JetBlue Airways | 68% | 20 min | 2.5% | 81 |
Monthly on-time trend
Best time to fly from TPA to ISP
Aim for departures around 6 a.m. (97% on-time); avoid 2 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 21 min |
| Tuesday | 84% | 7 min |
| Wednesday | 80% | 12 min |
| Thursdaybest | 84% | 12 min |
| Friday | 79% | 14 min |
| Saturday | 73% | 18 min |
| Sunday | 70% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft53%
- Airline operations31%
- National airspace system14%
- Weather3%
Frequently asked questions
- How often are flights from TPA to ISP delayed?
- 23% of TPA–ISP flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from TPA to ISP?
- Frontier Airlines has the best on-time record on this route at 79%, based on 568 flights. 3 airlines flew TPA–ISP frequently enough to compare in this period.
- What is the best time of day to fly from TPA to ISP?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 2 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TPA to ISP?
- The scheduled TPA–ISP flight time averages 2h 44m over 1,034 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are TPA to ISP flights cancelled?
- 2.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from TPA to ISP?
- December 2024 was the roughest month in this dataset, with only 58% of arrivals on time. The best was September 2024 at 93%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 938 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.