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Flight Reliability

F9 4874 · Frontier Airlines

Atlanta → Fort Lauderdale (ATL–FLL)

49
Bring Snacks
WanderNerd Reliability Score
62%
Arrive within 15 minutes
28 min
Average arrival delay
2.8%
Cancelled
3 min
Median arrival delay

Based on 319 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 4874 departing between 12–3 PM arrived on time 86% of the time, versus 57% between 3–6 PM.

Sunday scaries are real for this one.

F9 4874 arrived on time 71% of the time on Wednesdays and just 44% on Sundays. That gap is worth planning around.

Lagging the ATL–FLL route.

F9 4874 arrived on time 62% of the time, versus 70% across the ATL–FLL route.

Lagging the Frontier Airlines network.

F9 4874 arrived on time 62% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon62%(47 flights)
  • Tue69%(42 flights)
  • Wed71%(42 flights)
  • Thu57%(42 flights)
  • Fri70%(50 flights)
  • Sat61%(41 flights)
  • Sun44%(45 flights)
On-time by departure window
  • 6–9 AM71%(14 flights)
  • 9 AM–12 PM70%(33 flights)
  • 12–3 PM86%(28 flights)
  • 3–6 PM57%(206 flights)
  • 6–9 PM61%(28 flights)
On-time trend by month
68%
May

Jun 37% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202537%30
July 202552%29
August 202565%26
September 202587%23
October 202573%30
November 202573%26
December 202567%24
January 202667%18
February 202671%24
March 202639%28
April 202659%29
May 202668%22
Departures on time
60%
Diverted
0.3%
Flights flown
309
Months covered
12

Same route, other flights

Keep nerding

Based on 319 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.