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Flight Reliability

F9 3108 · Frontier Airlines

Las Vegas → St. Louis (LAS–STL)

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

Based on 157 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 91% of the time, against 88% between 9 AM–12 PM.

Mondays have been rough.

F9 3108 arrived on time 94% of the time on Saturdays and just 79% on Mondays. That gap is worth planning around.

Better than the LAS–STL route average.

F9 3108 arrived on time 89% of the time, versus 81% across the LAS–STL route.

Well ahead of the Frontier Airlines network.

F9 3108 arrived on time 89% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon79%(33 flights)
  • Tue—(3 flights)
  • Wed—(3 flights)
  • Thu91%(35 flights)
  • Fri91%(33 flights)
  • Sat94%(17 flights)
  • Sun91%(33 flights)
On-time by departure window
  • 6–9 AM89%(114 flights)
  • 9 AM–12 PM88%(16 flights)
  • 12–3 PM91%(22 flights)
  • 3–6 PM—(5 flights)
On-time trend by month
91%
May

Jun 83% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%18
July 202582%17
August 202583%18
September 202595%21
October 202594%18
November 202593%15
December 202592%12
March 202691%11
May 202691%11
Departures on time
83%
Diverted
0%
Flights flown
157
Months covered
12

Same route, other flights

Keep nerding

Based on 157 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.