Skip to content
WanderNerd
Check a flight

Flight Reliability

F9 1508 · Frontier Airlines

Las Vegas → Salt Lake City (LAS–SLC)

80
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min early
Average arrival delay
2.8%
Cancelled
14 min early
Median arrival delay

Based on 215 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 1508 departing between 9 AM–12 PM arrived on time 100% of the time, versus 75% between 6–9 PM.

Mondays have been rough.

F9 1508 arrived on time 95% of the time on Wednesdays and just 75% on Mondays. That gap is worth planning around.

Better than the Frontier Airlines network average.

F9 1508 arrived on time 86% of the time, versus 73% across the Frontier Airlines network.

Trending in the right direction.

F9 1508 arrived on time 91% of the time over the last three months in the data, compared with 79% in the three months before that.

The breakdown

On-time by weekday
  • Mon75%(36 flights)
  • Tue91%(22 flights)
  • Wed95%(21 flights)
  • Thu83%(36 flights)
  • Fri89%(36 flights)
  • Sat91%(21 flights)
  • Sun83%(36 flights)
On-time by departure window
  • 6–9 AM88%(60 flights)
  • 9 AM–12 PM100%(10 flights)
  • 12–3 PM86%(69 flights)
  • 3–6 PM83%(57 flights)
  • 6–9 PM75%(12 flights)
On-time trend by month
93%
May

Jun 88% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%17
July 202588%16
August 2025100%10
September 202583%23
October 202582%27
November 202581%21
December 202575%12
March 202692%26
April 202687%30
May 202693%14
Departures on time
86%
Diverted
0.5%
Flights flown
208
Months covered
12

Same route, other flights

Keep nerding

Based on 215 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.