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Flight Reliability

F9 1358 · Frontier Airlines

Ontario → Las Vegas (ONT–LAS)

85
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
6 min
Average arrival delay
1.4%
Cancelled
11 min early
Median arrival delay

Based on 139 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 1358 departing between 9 AM–12 PM arrived on time 93% of the time, versus 75% between 3–6 PM.

Sunday scaries are real for this one.

F9 1358 arrived on time 85% of the time on Saturdays and just 65% on Sundays. That gap is worth planning around.

A bit ahead of the ONT–LAS route.

F9 1358 arrived on time 83% of the time, versus 79% across the ONT–LAS route.

Better than the Frontier Airlines network average.

F9 1358 arrived on time 83% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon79%(14 flights)
  • Tue82%(17 flights)
  • Wed—(9 flights)
  • Thu83%(35 flights)
  • Fri—(5 flights)
  • Sat85%(40 flights)
  • Sun65%(17 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 9 AM–12 PM93%(14 flights)
  • 12–3 PM89%(54 flights)
  • 3–6 PM75%(63 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
83%
Mar

Jun 57% → Mar 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%14
July 202580%15
August 202588%16
September 2025100%12
October 202580%10
January 202677%17
February 202691%22
March 202683%12
Departures on time
83%
Diverted
0%
Flights flown
137
Months covered
12

Same route, other flights

Keep nerding

Based on 139 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.