Skip to content
WanderNerd
Check a flight

Flight Reliability

F9 4591 · Frontier Airlines

Phoenix → Santa Ana (PHX–SNA)

89
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
2 min
Average arrival delay
1.5%
Cancelled
12 min early
Median arrival delay

Based on 135 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4591 departing between 6–9 AM arrived on time 100% of the time, versus 71% between 6–9 PM.

Mondays have been rough.

F9 4591 arrived on time 100% of the time on Thursdays and just 77% on Mondays. That gap is worth planning around.

A bit ahead of the PHX–SNA route.

F9 4591 arrived on time 87% of the time, versus 81% across the PHX–SNA route.

Better than the Frontier Airlines network average.

F9 4591 arrived on time 87% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon77%(31 flights)
  • Tue—(0 flights)
  • Wed—(0 flights)
  • Thu100%(27 flights)
  • Fri87%(31 flights)
  • Sat93%(15 flights)
  • Sun79%(29 flights)
On-time by departure window
  • 6–9 AM100%(15 flights)
  • 9 AM–12 PM—(3 flights)
  • 12–3 PM92%(47 flights)
  • 3–6 PM96%(23 flights)
  • 6–9 PM71%(45 flights)
On-time trend by month
100%
Feb

Jun 71% → Feb 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%17
July 202577%17
August 202579%19
September 2025100%21
October 202588%16
January 202681%16
February 2026100%16
Departures on time
87%
Diverted
0%
Flights flown
133
Months covered
9

Same route, other flights

Keep nerding

Based on 135 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.