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Flight Reliability

F9 1550 · Frontier Airlines

Atlanta → Jacksonville (ATL–JAX)

55
A Little Dicey
WanderNerd Reliability Score
60%
Arrive within 15 minutes
20 min
Average arrival delay
1.8%
Cancelled
4 min
Median arrival delay

Based on 166 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 1550 departing between 12–3 PM arrived on time 91% of the time, versus 55% between 3–6 PM.

Sunday scaries are real for this one.

F9 1550 arrived on time 89% of the time on Wednesdays and just 43% on Sundays. That gap is worth planning around.

Well behind the ATL–JAX route.

F9 1550 arrived on time 60% of the time, versus 75% across the ATL–JAX route.

Lagging the Frontier Airlines network.

F9 1550 arrived on time 60% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon54%(26 flights)
  • Tue—(4 flights)
  • Wed89%(18 flights)
  • Thu71%(35 flights)
  • Fri63%(27 flights)
  • Sat50%(16 flights)
  • Sun43%(37 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM73%(11 flights)
  • 12–3 PM91%(11 flights)
  • 3–6 PM55%(117 flights)
  • 6–9 PM71%(17 flights)
On-time trend by month
45%
May

Nov 64% → May 45% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202564%11
December 202546%11
January 202660%15
February 202671%14
March 202670%20
April 202652%21
May 202645%31
Departures on time
66%
Diverted
0%
Flights flown
163
Months covered
12

Same route, other flights

Keep nerding

Based on 166 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.