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Flight Reliability

F9 3660 · Frontier Airlines

Phoenix → Austin (PHX–AUS)

87
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
6 min
Average arrival delay
0.6%
Cancelled
8 min early
Median arrival delay

Based on 163 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 3660 departing between 6–9 AM arrived on time 98% of the time, versus 60% between 12–3 PM.

Sunday scaries are real for this one.

F9 3660 arrived on time 93% of the time on Thursdays and just 76% on Sundays. That gap is worth planning around.

A bit ahead of the PHX–AUS route.

F9 3660 arrived on time 81% of the time, versus 77% across the PHX–AUS route.

Better than the Frontier Airlines network average.

F9 3660 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon77%(34 flights)
  • Tue—(2 flights)
  • Wed90%(10 flights)
  • Thu93%(29 flights)
  • Fri77%(43 flights)
  • Sat—(3 flights)
  • Sun76%(41 flights)
On-time by departure window
  • 3–6 AM92%(24 flights)
  • 6–9 AM98%(56 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM60%(47 flights)
  • 3–6 PM70%(27 flights)
On-time trend by month
75%
Mar

Jun 47% → Mar 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%15
July 202565%17
August 202583%18
September 2025100%17
October 202578%18
November 202583%12
December 202593%14
January 202692%12
February 2026100%14
March 202675%16
Departures on time
80%
Diverted
0%
Flights flown
162
Months covered
12

Same route, other flights

Keep nerding

Based on 163 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.