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Flight Reliability

F9 4405 · Frontier Airlines

Miami → Atlanta (MIA–ATL)

54
A Little Dicey
WanderNerd Reliability Score
62%
Arrive within 15 minutes
24 min
Average arrival delay
1.8%
Cancelled
0 min
Median arrival delay

Based on 333 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 4405 departing between 3–6 PM arrived on time 69% of the time, versus 59% between 6–9 PM.

Sunday scaries are real for this one.

F9 4405 arrived on time 73% of the time on Fridays and just 44% on Sundays. That gap is worth planning around.

Lagging the MIA–ATL route.

F9 4405 arrived on time 62% of the time, versus 73% across the MIA–ATL route.

Lagging the Frontier Airlines network.

F9 4405 arrived on time 62% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon54%(48 flights)
  • Tue68%(40 flights)
  • Wed65%(40 flights)
  • Thu69%(52 flights)
  • Fri73%(48 flights)
  • Sat64%(47 flights)
  • Sun44%(50 flights)
On-time by departure window
  • 3–6 PM69%(94 flights)
  • 6–9 PM59%(229 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
53%
May

Jun 69% → May 53% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%26
July 202567%30
August 202567%30
September 202573%30
October 202578%27
November 202555%22
December 202556%27
January 202668%25
February 202659%22
March 202637%27
April 202662%29
May 202653%30
Departures on time
74%
Diverted
0.6%
Flights flown
325
Months covered
12

Same route, other flights

Keep nerding

Based on 333 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.