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Flight Reliability

F9 3942 · Frontier Airlines

Orlando → ISP (MCO–ISP)

89
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
0 min
Average arrival delay
1.0%
Cancelled
12 min early
Median arrival delay

Based on 191 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 3942 departing between 3–6 AM arrived on time 100% of the time, versus 23% between 9 PM–12 AM.

Sunday scaries are real for this one.

F9 3942 arrived on time 97% of the time on Fridays and just 69% on Sundays. That gap is worth planning around.

Better than the MCO–ISP route average.

F9 3942 arrived on time 85% of the time, versus 75% across the MCO–ISP route.

Better than the Frontier Airlines network average.

F9 3942 arrived on time 85% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon90%(30 flights)
  • Tue94%(18 flights)
  • Wed91%(21 flights)
  • Thu79%(28 flights)
  • Fri97%(30 flights)
  • Sat85%(26 flights)
  • Sun69%(36 flights)
On-time by departure window
  • 3–6 AM100%(14 flights)
  • 6–9 AM94%(131 flights)
  • 9 AM–12 PM55%(11 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM64%(11 flights)
  • 6–9 PM—(5 flights)
  • 9 PM–12 AM23%(13 flights)
On-time trend by month
90%
May

Aug 50% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202550%10
September 202596%27
October 202596%25
November 202590%30
December 202579%19
February 2026100%14
April 202689%18
May 202690%29
Departures on time
87%
Diverted
0%
Flights flown
189
Months covered
11

Same route, other flights

Keep nerding

Based on 191 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.