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Flight Reliability

F9 4130 · Frontier Airlines

Los Angeles → Salt Lake City (LAX–SLC)

97
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
1 min
Average arrival delay
0%
Cancelled
11 min early
Median arrival delay

Based on 199 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 92% of the time, against 89% between 9 AM–12 PM.

Wednesdays have been rough.

F9 4130 arrived on time 100% of the time on Tuesdays and just 84% on Wednesdays. That gap is worth planning around.

Well ahead of the Frontier Airlines network.

F9 4130 arrived on time 89% of the time, versus 73% across the Frontier Airlines network.

It basically never cancels.

Out of 199 scheduled flights, only 0.0% were cancelled.

The breakdown

On-time by weekday
  • Mon94%(34 flights)
  • Tue100%(15 flights)
  • Wed84%(19 flights)
  • Thu88%(34 flights)
  • Fri86%(35 flights)
  • Sat89%(26 flights)
  • Sun89%(36 flights)
On-time by departure window
  • 6–9 AM92%(12 flights)
  • 9 AM–12 PM89%(149 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM—(5 flights)
  • 6–9 PM92%(26 flights)
On-time trend by month
87%
May

Sep 90% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202590%10
October 202594%18
November 202595%21
December 202593%14
January 202691%23
February 202687%23
March 202693%29
April 202680%30
May 202687%31
Departures on time
92%
Diverted
0%
Flights flown
199
Months covered
9

Same route, other flights

Keep nerding

Based on 199 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.