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Flight Reliability

F9 4766 · Frontier Airlines

Phoenix → Denver (PHX–DEN)

83
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
8 min
Average arrival delay
1.1%
Cancelled
10 min early
Median arrival delay

Based on 183 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4766 departing between 9 AM–12 PM arrived on time 89% of the time, versus 44% between 12–3 PM.

Tuesdays have been rough.

F9 4766 arrived on time 96% of the time on Mondays and just 62% on Tuesdays. That gap is worth planning around.

A bit ahead of the PHX–DEN route.

F9 4766 arrived on time 82% of the time, versus 78% across the PHX–DEN route.

Better than the Frontier Airlines network average.

F9 4766 arrived on time 82% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon96%(25 flights)
  • Tue62%(26 flights)
  • Wed94%(17 flights)
  • Thu76%(29 flights)
  • Fri86%(29 flights)
  • Sat75%(28 flights)
  • Sun89%(26 flights)
On-time by departure window
  • 6–9 AM84%(25 flights)
  • 9 AM–12 PM89%(72 flights)
  • 12–3 PM44%(18 flights)
  • 3–6 PM55%(11 flights)
  • 6–9 PM89%(54 flights)
On-time trend by month
83%
May

Sep 88% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202588%16
October 202594%18
November 202580%10
January 202678%23
February 202689%26
April 202690%30
May 202683%24
Departures on time
85%
Diverted
0.5%
Flights flown
180
Months covered
12

Same route, other flights

Keep nerding

Based on 183 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.