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Flight Reliability

F9 2171 · Frontier Airlines

Fort Lauderdale → Atlanta (FLL–ATL)

39
Bring Snacks
WanderNerd Reliability Score
56%
Arrive within 15 minutes
28 min
Average arrival delay
3.8%
Cancelled
9 min
Median arrival delay

Based on 286 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 2171 departing between 12–3 PM arrived on time 67% of the time, versus 50% between 6–9 AM.

Sunday scaries are real for this one.

F9 2171 arrived on time 76% of the time on Wednesdays and just 41% on Sundays. That gap is worth planning around.

Well behind the FLL–ATL route.

F9 2171 arrived on time 56% of the time, versus 72% across the FLL–ATL route.

Well behind the Frontier Airlines network.

F9 2171 arrived on time 56% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon45%(49 flights)
  • Tue71%(24 flights)
  • Wed76%(25 flights)
  • Thu60%(48 flights)
  • Fri63%(48 flights)
  • Sat55%(31 flights)
  • Sun41%(49 flights)
On-time by departure window
  • 6–9 AM50%(10 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM67%(15 flights)
  • 3–6 PM63%(35 flights)
  • 6–9 PM54%(187 flights)
  • 9 PM–12 AM58%(26 flights)
On-time trend by month
44%
May

Jun 14% → May 44% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202514%21
July 202545%20
August 202555%22
September 202594%17
October 202567%27
November 202564%22
December 202563%24
January 202669%26
February 202659%27
March 202639%26
April 202663%24
May 202644%18
Departures on time
58%
Diverted
0.3%
Flights flown
274
Months covered
12

Same route, other flights

Keep nerding

Based on 286 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.