PlainFlights

Route · ISP → MCO · 2020–2025 BTS data

Islip to Orlando

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ISP to MCO (Islip to Orlando) ranks #1645 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

77.6%
On-time
-1.4 pts
vs US avg
81 min
Delay when late
7,628
Flights
#1645 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Oct 2024 95%

Worst Month

Aug 2025 62%

Distance

971 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 132 42 4 1 WN,F9,B6
Nov 2025 130 32 0 0 F9,B6,WN
Oct 2025 111 20 0 0 B6,WN,F9
Sep 2025 108 20 0 1 WN,F9,B6
Aug 2025 125 48 1 2 WN,F9,B6
Jul 2025 124 45 1 0 B6,WN,F9
Jun 2025 116 37 1 0 B6,WN,F9
May 2025 128 39 0 3 B6,WN,F9
Apr 2025 149 30 0 1 F9,WN,B6
Mar 2025 131 28 1 0 B6,WN,F9
Feb 2025 125 25 1 0 B6,WN,F9
Jan 2025 119 23 2 0 B6,WN,F9
Dec 2024 131 34 0 0 B6,F9,WN
Nov 2024 111 13 0 0 B6,WN,F9
Oct 2024 76 4 5 0 WN,F9,B6
Sep 2024 97 11 0 0 WN,F9
Aug 2024 119 45 1 0 F9,WN
Jul 2024 102 27 6 2 F9,WN
Jun 2024 99 24 3 0 F9,WN
May 2024 110 21 1 0 F9,WN
Apr 2024 118 23 3 0 F9,WN
Mar 2024 132 35 4 0 F9,WN
Feb 2024 129 24 1 0 F9,WN
Jan 2024 134 37 1 1 F9,WN

ISP–MCO seasonal on-time pattern

Best: October (85.6%) · weakest: July (67.7%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 77.1%

Strongest calendar month

October

85.6% on-time · ~100 flights/mo

Busiest calendar month

December

~120 flights/mo avg

Weakest calendar month

July

67.7% on-time · ~103 flights/mo

Cancellation Rate

1.3%

36 of 2,856 flights

Diversion Rate

0.4%

11 of 2,856 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 profile

MCO - Orlando

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

MCO on-time profile

Compare the two airports

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

Compare ISP vs MCO

Origin-hub reliability standing

Mid-pack among ISP departures

From ISP, this corridor sits with 3 other 75–85% on-time routes out of 5 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 1 below 75%). Destination: Orlando · fleet on-time rank #3941 of 4927.

What the Data Says About ISP to MCO

The Islip to Orlando corridor (ISP to MCO) posts a 77.6% on-time rate on the lower edge of the average band, based on 7,628 tracked flights. Late flights run 81.1 minutes behind on average. 7 carriers cover the 971-mile route; over the last 24 months, 36 of 2,856 flights were cancelled (1.3%) and 0.4% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 95% on-time, while Aug 2025 came in at just 62% - a 33-point swing worth factoring into travel timing.

On the multi-year calendar, ISP–MCO peaks in October at 85.6% on-time while December carries the heaviest traffic (~120 flights per month) ; the softest month is July at 67.7%, 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 ISP to MCO rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ISP to MCO ranks #1645 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 ISP to MCO? ▼
Flights from Islip to Orlando have a 77.6% on-time rate based on 7,628 flights. The average delay is 81.1 minutes. The best recent month was Oct 2024 with 95% on-time.
What is the cancellation rate for ISP to MCO? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (36 of 2,856 flights) and 0.4% were diverted.
How far is the flight from ISP to MCO? ▼
The flight distance from Islip (ISP) to Orlando (MCO) is approximately 971 miles. This route is served by 7 carriers.
When is the best time to fly from ISP to MCO? ▼
The best recent month for on-time performance was Oct 2024 (95% on-time). The worst was Aug 2025 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

ISP Airport

Islip
MCO Airport

Orlando
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–MCO data

ISP–MCO is mid-pack at 77.6% on-time; month and carrier mix move more than the corridor headline.

  • Compare ISP and MCO airport profiles: delay causes and top routes differ even on the same corridor. ISP airport
  • If your dates flex, October (85.6% on-time) beats July (67.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 77.6% 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.