Frontier Airlines ISP to FLL on-time performance
Frontier Airlines nonstop flights from Islip to Fort Lauderdale · Aug 2025 – Jul 2026
On-time arrivals
22%
arrived < 15 min late
Cancelled
5.3%
1 flights
Avg arrival delay
38 min
49 min when late
Rank on route
#3 of 3
route average 69% on time
Key facts
- Frontier Airlines flights on ISP to FLL arrived on time 22% of the time in Aug 2025 – Jul 2026.
- 5.3% were cancelled, and 22% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 69% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (52%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)52%
- Late-arriving aircraft38%
- Air traffic control & airport congestion11%
- Extreme weather0%
- Security0%
Other airlines on ISP to FLL
- JetBlue71% on time · 26 min avg delay
- Southwest Airlines67% on time · 9 min avg delay
Full ISP to FLL comparison →
Frontier Airlines on-time record across all routes →
19 Frontier Airlines flights tracked on this route; 1 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.