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Flight Reliability

F9 1099 · Frontier Airlines

Atlanta → Phoenix (ATL–PHX)

68
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
16 min
Average arrival delay
1.1%
Cancelled
6 min early
Median arrival delay

Based on 176 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

F9 1099 departing between 6–9 AM arrived on time 87% of the time, versus 56% between 9 AM–12 PM.

Mondays have been rough.

F9 1099 arrived on time 80% of the time on Thursdays and just 55% on Mondays. That gap is worth planning around.

A bit behind the ATL–PHX route.

F9 1099 arrived on time 69% of the time, versus 75% across the ATL–PHX route.

A bit behind the Frontier Airlines network.

F9 1099 arrived on time 69% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon55%(47 flights)
  • Tue—(3 flights)
  • Wed79%(14 flights)
  • Thu80%(20 flights)
  • Fri79%(48 flights)
  • Sat56%(16 flights)
  • Sun72%(25 flights)
On-time by departure window
  • 6–9 AM87%(23 flights)
  • 9 AM–12 PM56%(55 flights)
  • 12–3 PM74%(82 flights)
  • 3–6 PM—(2 flights)
  • 6–9 PM—(7 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
58%
May

Jun 40% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202540%10
September 202550%12
October 202577%13
November 202564%14
December 202560%15
January 202673%15
February 202679%19
March 202686%21
April 202680%25
May 202658%12
Departures on time
62%
Diverted
0.6%
Flights flown
173
Months covered
12

Same route, other flights

Keep nerding

Based on 176 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.