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Flight Reliability

F9 4247 · Frontier Airlines

Las Vegas → Reno (LAS–RNO)

72
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
17 min
Average arrival delay
1.6%
Cancelled
9 min early
Median arrival delay

Based on 187 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4247 departing between 9 AM–12 PM arrived on time 86% of the time, versus 70% between 3–6 PM.

Mondays have been rough.

F9 4247 arrived on time 100% of the time on Saturdays and just 56% on Mondays. That gap is worth planning around.

A bit behind the LAS–RNO route.

F9 4247 arrived on time 74% of the time, versus 81% across the LAS–RNO route.

Recent months have been rougher.

F9 4247 arrived on time 70% of the time over the last three months in the data, compared with 81% in the three months before that.

The breakdown

On-time by weekday
  • Mon56%(45 flights)
  • Tue—(4 flights)
  • Wed—(4 flights)
  • Thu88%(40 flights)
  • Fri69%(39 flights)
  • Sat100%(12 flights)
  • Sun83%(40 flights)
On-time by departure window
  • 9 AM–12 PM86%(35 flights)
  • 12–3 PM75%(36 flights)
  • 3–6 PM70%(95 flights)
  • 6–9 PM72%(18 flights)
On-time trend by month
79%
May

Jun 64% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%14
July 202581%16
August 202588%17
September 202565%17
October 202550%18
November 202590%19
December 202569%13
January 202686%14
February 202670%10
April 202660%15
May 202679%29
Departures on time
74%
Diverted
0%
Flights flown
184
Months covered
12

Same route, other flights

Keep nerding

Based on 187 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.