PlainFlights

Route · MCO → ISP · 2020–2025 BTS data

Orlando to Islip

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MCO to ISP (Orlando to Islip) ranks #1654 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

75.7%
On-time
-3.3 pts
vs US avg
68 min
Delay when late
7,608
Flights
#1654 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Oct 2024 92%

Worst Month

Jul 2025 65%

Distance

971 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 133 43 3 1 WN,F9,B6
Nov 2025 130 20 0 1 F9,B6,WN
Oct 2025 111 28 0 0 B6,WN,F9
Sep 2025 107 12 0 0 WN,F9,B6
Aug 2025 125 36 1 1 WN,F9,B6
Jul 2025 124 44 0 0 B6,WN,F9
Jun 2025 116 33 1 0 B6,WN,F9
May 2025 128 31 0 1 B6,WN,F9
Apr 2025 149 35 0 0 F9,WN,B6
Mar 2025 132 26 2 1 B6,WN,F9
Feb 2025 125 20 1 0 B6,WN,F9
Jan 2025 118 14 0 0 B6,WN,F9
Dec 2024 131 25 1 0 B6,F9,WN
Nov 2024 112 22 0 0 B6,WN,F9
Oct 2024 77 6 4 0 WN,F9,B6
Sep 2024 97 16 0 0 WN,F9
Aug 2024 120 34 1 0 F9,WN
Jul 2024 102 23 3 0 F9,WN
Jun 2024 99 21 0 0 F9,WN
May 2024 110 28 0 0 F9,WN
Apr 2024 118 26 1 1 F9,WN
Mar 2024 131 33 6 0 F9,WN
Feb 2024 129 29 1 0 F9,WN
Jan 2024 134 28 2 0 F9,WN

MCO–ISP seasonal on-time pattern

Best: January (82.2%) · weakest: July (64.3%)

60%65%70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 72.7%

Strongest calendar month

January

82.2% on-time · ~109 flights/mo

Busiest calendar month

December

~120 flights/mo avg

Weakest calendar month

July

64.3% on-time · ~102 flights/mo

Cancellation Rate

0.9%

27 of 2,858 flights

Diversion Rate

0.2%

6 of 2,858 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

MCO - Orlando

Full on-time, delay-cause, and seasonal performance for Orlando, FL.

MCO on-time profile

ISP - Islip

Full on-time, delay-cause, and seasonal performance for Islip, NY.

ISP on-time profile

Compare the two airports

See MCO and ISP side by side on delays, cancellations, and reliability.

Compare MCO vs ISP

Origin-hub reliability standing

Mid-pack among MCO departures

From MCO, this corridor sits with 45 other 75–85% on-time routes out of 71 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 26 below 75%). Destination: Islip · fleet on-time rank #4363 of 4927.

What the Data Says About MCO to ISP

The Orlando to Islip corridor (MCO to ISP) posts a 75.7% on-time rate on the lower edge of the average band, based on 7,608 tracked flights. Late flights run 68.2 minutes behind on average. 7 carriers cover the 971-mile route; over the last 24 months, 27 of 2,858 flights were cancelled (0.9%) and 0.2% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 65% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, MCO–ISP peaks in January at 82.2% on-time while December carries the heaviest traffic (~120 flights per month) ; the softest month is July at 64.3%, a 17.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MCO to ISP rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MCO to ISP ranks #1654 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from MCO to ISP? ▼
Flights from Orlando to Islip have a 75.7% on-time rate based on 7,608 flights. The average delay is 68.2 minutes. The best recent month was Oct 2024 with 92% on-time.
What is the cancellation rate for MCO to ISP? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (27 of 2,858 flights) and 0.2% were diverted.
How far is the flight from MCO to ISP? ▼
The flight distance from Orlando (MCO) to Islip (ISP) is approximately 971 miles. This route is served by 7 carriers.
When is the best time to fly from MCO to ISP? ▼
The best recent month for on-time performance was Oct 2024 (92% on-time). The worst was Jul 2025 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

MCO Airport

Orlando
ISP Airport

Islip
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 MCO–ISP data

MCO–ISP is mid-pack at 75.7% on-time; month and carrier mix move more than the corridor headline.

  • Compare MCO and ISP airport profiles: delay causes and top routes differ even on the same corridor. MCO airport
  • If your dates flex, January (82.2% on-time) beats July (64.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 75.7% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.