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Flight Reliability

F9 4731 · Frontier Airlines

New York → Atlanta (JFK–ATL)

65
Usually Fine
WanderNerd Reliability Score
68%
Arrive within 15 minutes
19 min
Average arrival delay
1.7%
Cancelled
1 min early
Median arrival delay

Based on 229 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4731 departing between 9 AM–12 PM arrived on time 74% of the time, versus 67% between 12–3 PM.

Mondays have been rough.

F9 4731 arrived on time 87% of the time on Wednesdays and just 57% on Mondays. That gap is worth planning around.

Lagging the JFK–ATL route.

F9 4731 arrived on time 68% of the time, versus 77% across the JFK–ATL route.

A bit behind the Frontier Airlines network.

F9 4731 arrived on time 68% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon57%(30 flights)
  • Tue66%(35 flights)
  • Wed87%(31 flights)
  • Thu69%(35 flights)
  • Fri65%(31 flights)
  • Sat73%(30 flights)
  • Sun64%(33 flights)
On-time by departure window
  • 9 AM–12 PM74%(39 flights)
  • 12–3 PM67%(186 flights)
On-time trend by month
80%
May

Aug 77% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202577%13
September 202570%30
October 202556%27
December 202554%13
January 202640%20
February 202685%27
March 202665%31
April 202683%30
May 202680%30
Departures on time
72%
Diverted
0%
Flights flown
225
Months covered
10

Same route, other flights

Keep nerding

Based on 229 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.