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Flight Reliability

F9 3156 · Frontier Airlines

Los Angeles → Denver (LAX–DEN)

92
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
1 min
Average arrival delay
0.8%
Cancelled
9 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

What the data says

Saturdays have been rough.

F9 3156 arrived on time 94% of the time on Sundays and just 79% on Saturdays. That gap is worth planning around.

A bit ahead of the LAX–DEN route.

F9 3156 arrived on time 88% of the time, versus 82% across the LAX–DEN route.

Better than the Frontier Airlines network average.

F9 3156 arrived on time 88% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon94%(51 flights)
  • Tue81%(52 flights)
  • Wed87%(52 flights)
  • Thu88%(50 flights)
  • Fri92%(51 flights)
  • Sat79%(48 flights)
  • Sun94%(53 flights)
On-time by departure window
  • 6–9 AM88%(355 flights)
  • 9 AM–12 PM—(2 flights)
On-time trend by month
90%
May

Jun 85% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202580%30
August 202590%31
September 202583%30
October 202590%31
November 202597%29
December 202579%28
January 202694%31
February 202693%28
March 202684%31
April 202690%30
May 202690%31
Departures on time
91%
Diverted
0.3%
Flights flown
357
Months covered
12

Same route, other flights

Keep nerding

Based on 361 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.