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Flight Reliability

F9 4248 · Frontier Airlines

Reno → Las Vegas (RNO–LAS)

57
A Little Dicey
WanderNerd Reliability Score
68%
Arrive within 15 minutes
28 min
Average arrival delay
1.9%
Cancelled
4 min early
Median arrival delay

Based on 206 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 4248 departing between 3–6 PM arrived on time 82% of the time, versus 62% between 6–9 PM.

Mondays have been rough.

F9 4248 arrived on time 87% of the time on Saturdays and just 56% on Mondays. That gap is worth planning around.

Well behind the RNO–LAS route.

F9 4248 arrived on time 68% of the time, versus 83% across the RNO–LAS route.

A bit behind the Frontier Airlines network.

F9 4248 arrived on time 68% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon56%(48 flights)
  • Tue—(4 flights)
  • Wed—(4 flights)
  • Thu71%(44 flights)
  • Fri74%(43 flights)
  • Sat87%(15 flights)
  • Sun67%(43 flights)
On-time by departure window
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM66%(50 flights)
  • 3–6 PM82%(34 flights)
  • 6–9 PM62%(95 flights)
  • 9 PM–12 AM71%(14 flights)
On-time trend by month
69%
May

Jun 46% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%13
July 202569%16
August 202577%17
September 202541%17
October 202550%18
November 202584%19
December 202592%12
January 202679%14
February 202669%13
March 202681%16
April 202659%17
May 202669%29
Departures on time
72%
Diverted
0.5%
Flights flown
201
Months covered
12

Same route, other flights

Keep nerding

Based on 206 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.