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Flight Reliability

F9 3546 · Frontier Airlines

San Juan → New York (SJU–JFK)

72
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
3.1%
Cancelled
8 min early
Median arrival delay

Based on 228 historical flights. Data through May 2026.

What the data says

The 9 AM–12 PM departure wins.

F9 3546 departing between 9 AM–12 PM arrived on time 89% of the time, versus 78% between 6–9 AM.

Mondays have been rough.

F9 3546 arrived on time 88% of the time on Wednesdays and just 70% on Mondays. That gap is worth planning around.

Better than the Frontier Airlines network average.

F9 3546 arrived on time 80% of the time, versus 73% across the Frontier Airlines network.

Keep a backup plan handy.

F9 3546 was cancelled 3.1% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon70%(30 flights)
  • Tue76%(33 flights)
  • Wed88%(33 flights)
  • Thu78%(32 flights)
  • Fri84%(31 flights)
  • Sat86%(29 flights)
  • Sun81%(31 flights)
On-time by departure window
  • 6–9 AM78%(172 flights)
  • 9 AM–12 PM89%(47 flights)
On-time trend by month
81%
Feb

Jun 86% → Feb 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%28
July 202563%30
August 202572%18
October 202596%24
November 202583%30
December 202583%29
January 202683%29
February 202681%26
Departures on time
87%
Diverted
0.9%
Flights flown
219
Months covered
9

Same route, other flights

Keep nerding

Based on 228 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.