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Flight Reliability

F9 1748 · Frontier Airlines

Phoenix → Denver (PHX–DEN)

77
Usually Fine
WanderNerd Reliability Score
79%
Arrive within 15 minutes
13 min
Average arrival delay
1.5%
Cancelled
10 min early
Median arrival delay

Based on 137 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 1748 departing between 12–3 PM arrived on time 90% of the time, versus 67% between 3–6 PM.

Monday is the weak spot.

F9 1748 arrived on time 87% of the time on Tuesdays. On Mondays: 74%.

A bit ahead of the Frontier Airlines network.

F9 1748 arrived on time 79% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon74%(19 flights)
  • Tue87%(23 flights)
  • Wed79%(19 flights)
  • Thu82%(17 flights)
  • Fri74%(23 flights)
  • Sat79%(14 flights)
  • Sun79%(19 flights)
On-time by departure window
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM90%(77 flights)
  • 3–6 PM67%(43 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
72%
May

Jan 61% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
January 202661%23
February 202689%28
March 202668%28
April 202696%23
May 202672%18
Departures on time
77%
Diverted
0.7%
Flights flown
134
Months covered
8

Same route, other flights

Keep nerding

Based on 137 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.