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Flight Reliability

F9 4949 · Frontier Airlines

Salt Lake City → Phoenix (SLC–PHX)

91
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
7 min early
Average arrival delay
0.7%
Cancelled
19 min early
Median arrival delay

Based on 137 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 4949 departing between 9 AM–12 PM arrived on time 98% of the time, versus 82% between 12–3 PM.

Sunday scaries are real for this one.

F9 4949 arrived on time 100% of the time on Tuesdays and just 70% on Sundays. That gap is worth planning around.

A bit ahead of the SLC–PHX route.

F9 4949 arrived on time 89% of the time, versus 85% across the SLC–PHX route.

Well ahead of the Frontier Airlines network.

F9 4949 arrived on time 89% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon89%(18 flights)
  • Tue100%(21 flights)
  • Wed86%(21 flights)
  • Thu91%(21 flights)
  • Fri94%(17 flights)
  • Sat100%(14 flights)
  • Sun70%(23 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM98%(41 flights)
  • 12–3 PM82%(55 flights)
  • 3–6 PM92%(25 flights)
  • 6–9 PM—(4 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
89%
Feb

Aug 100% → Feb 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 2025100%10
September 202591%22
October 202583%18
November 202573%11
December 202588%17
January 202692%12
February 202689%26
Departures on time
91%
Diverted
0.7%
Flights flown
135
Months covered
10

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.