Historical on-time performance
Tampa to Islip
1,034 miData through Dec 2025Source: US DOT · BTS
Flights on TPA–ISP arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 225 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesbestOn-time88%Medianon timep9020 minCancel0.0%Flights69
- Frontier AirlinesOn-time73%Medianon timep9045 minCancel2.6%Flights156
Why flights run late
Delay causes
- Airline32%
- Weather3%
- Air traffic (NAS)15%
- Late aircraft51%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly TPA → ISP
All airlines · rolling 36 months (2023-01 .. 2025-12).
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 · 591 flights
- Middays79% on time · p90 40 min · 463 flights
- Evenings66% on time · p90 65 min · 119 flights · limited
- Afternoons66% on time · p90 60 min · 242 flights
- Overnights56% on time · p90 100 min · 126 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 84% on time.
- Tuesdays84% on time · p90 25 min · 132 flights · limited
- Thursdays82% on time · p90 40 min · 222 flights
- Wednesdays80% on time · p90 45 min · 124 flights · limited
- Mondays79% on time · p90 35 min · 217 flights
- Saturdays79% on time · p90 40 min · 310 flights
- Fridays75% on time · p90 55 min · 228 flights
- Sundays73% on time · p90 50 min · 308 flights
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