Historical on-time performance
Orlando to Islip
972 miData through May 2026Source: US DOT · BTS
Flights on MCO–ISP arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 1,294 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysbestOn-time88%Medianon timep9020 minCancel0.9%Flights341
- Frontier AirlinesOn-time73%Medianon timep9065 minCancel2.2%Flights269
- Southwest AirlinesOn-time65%Medianon timep9050 minCancel1.5%Flights684
Why flights run late
Delay causes
- Airline34%
- Weather5%
- Air traffic (NAS)16%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline16%
- Weather63%
- Air traffic (NAS)21%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 19 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MCO → ISP
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 10 min · 1,828 flights
- Middays74% on time · p90 40 min · 741 flights
- Afternoons67% on time · p90 75 min · 463 flights
- Evenings61% on time · p90 75 min · 674 flights
- Overnights55% on time · p90 85 min · 530 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 85% on time.
- Tuesdays85% on time · p90 20 min · 550 flights
- Wednesdays77% on time · p90 40 min · 541 flights
- Saturdays75% on time · p90 45 min · 670 flights
- Fridays75% on time · p90 45 min · 617 flights
- Thursdays74% on time · p90 45 min · 614 flights
- Mondays73% on time · p90 40 min · 619 flights
- Sundays69% on time · p90 65 min · 625 flights
Keep exploring