Route · ISP → TPA · 2020–2025 BTS data
Islip to Tampa
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ISP to TPA (Islip to Tampa) ranks #3579 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 73%
- On-time
- -6 pts
- vs US avg
- 84 min
- Delay when late
- 2,416
- Flights
- #3579 of 4927
- Corpus placement
Cancelled
2.2%
Best Month
Oct 2023 93%
Worst Month
Mar 2024 62%
Distance
1,034 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 49 | 15 | 4 | 0 | B6,WN,F9 |
| Nov 2025 | 31 | 5 | 0 | 0 | F9,WN |
| Oct 2025 | 30 | 3 | 2 | 0 | F9 |
| Sep 2025 | 36 | 8 | 1 | 0 | WN,F9 |
| Aug 2025 | 42 | 10 | 0 | 0 | WN,F9 |
| Jul 2025 | 39 | 15 | 0 | 0 | WN,F9 |
| Jun 2025 | 38 | 13 | 2 | 0 | WN,F9 |
| May 2025 | 65 | 18 | 2 | 0 | WN,F9 |
| Apr 2025 | 63 | 16 | 0 | 0 | F9,WN |
| Mar 2025 | 50 | 14 | 2 | 0 | WN,F9 |
| Feb 2025 | 51 | 16 | 2 | 0 | WN,F9 |
| Jan 2025 | 35 | 9 | 0 | 0 | WN,F9 |
| Dec 2024 | 36 | 18 | 0 | 0 | F9,WN |
| Sep 2024 | 30 | 3 | 2 | 0 | WN,F9 |
| Aug 2024 | 36 | 9 | 2 | 0 | F9,WN |
| Jun 2024 | 31 | 8 | 0 | 0 | F9,WN |
| May 2024 | 33 | 7 | 0 | 0 | F9,WN |
| Apr 2024 | 44 | 10 | 2 | 0 | F9,WN |
| Mar 2024 | 61 | 23 | 1 | 0 | F9,WN |
| Feb 2024 | 55 | 9 | 0 | 0 | F9,WN |
| Jan 2024 | 54 | 12 | 1 | 0 | F9,WN |
| Dec 2023 | 61 | 18 | 0 | 0 | F9,WN |
| Nov 2023 | 69 | 10 | 0 | 0 | F9,WN |
| Oct 2023 | 70 | 5 | 1 | 0 | F9,WN |
ISP–TPA seasonal on-time pattern
Best: October (90.5%) · weakest: July (52.9%)
Strongest calendar month
October
90.5% on-time · ~53 flights/mo
Busiest calendar month
November
~56 flights/mo avg
Weakest calendar month
July
52.9% on-time · ~38 flights/mo
Cancellation Rate
2.2%
24 of 1,109 flights
Diversion Rate
0.0%
0 of 1,109 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ISP - Islip
Full on-time, delay-cause, and seasonal performance for Islip, NY.
ISP on-time profileTPA - Tampa
Full on-time, delay-cause, and seasonal performance for Tampa, FL.
TPA on-time profileCompare the two airports
See ISP and TPA side by side on delays, cancellations, and reliability.
Compare ISP vs TPAOrigin-hub reliability standing
Softer reliability from ISP
Among 5 routes leaving ISP, only 1 (including this one) clear below 75% on-time, while 1 stay ≥85% and 3 sit mid-band. Travelers comparing ISP options should weigh this 73% print against those peers · fleet on-time rank #4682 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ISP–TPA.
Routes with a similar on-time rate
What the Data Says About ISP to TPA
On-time performance on the ISP to TPA pairing (Islip to Tampa) trails a chunk of the network: 73% of 2,416 tracked flights arrived on schedule, with a 83.6-minute average delay on the ones that ran late. The route spans about 1,034 miles across 4 carriers. Cancellations over the trailing 24 months hit 2.2% (24 of 1,109 flights), with 0.0% diverted.
The monthly split is wide on this route: Oct 2023 posted the strongest performance at 93% on-time, while Mar 2024 came in at just 62% - a 31-point swing worth factoring into travel timing.
On the multi-year calendar, ISP–TPA peaks in October at 90.5% on-time while November carries the heaviest traffic (~56 flights per month) ; the softest month is July at 52.9%, a 37.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ISP to TPA rank among US routes by traffic? ▼
How often are flights delayed from ISP to TPA? ▼
What is the cancellation rate for ISP to TPA? ▼
How far is the flight from ISP to TPA? ▼
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Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using ISP–TPA data
ISP–TPA sits 6 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare ISP and TPA airport profiles: delay causes and top routes differ even on the same corridor. ISP airport
- If your dates flex, October (90.5% on-time) beats July (52.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 73% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.