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Flight Reliability

F9 2146 · Frontier Airlines

Las Vegas → Chicago (LAS–ORD)

55
A Little Dicey
WanderNerd Reliability Score
71%
Arrive within 15 minutes
17 min
Average arrival delay
4.7%
Cancelled
5 min early
Median arrival delay

Based on 148 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

F9 2146 departing between 6–9 AM arrived on time 93% of the time, versus 50% between 12–3 AM.

Mondays have been rough.

F9 2146 arrived on time 90% of the time on Thursdays and just 66% on Mondays. That gap is worth planning around.

A bit behind the LAS–ORD route.

F9 2146 arrived on time 71% of the time, versus 77% across the LAS–ORD route.

Keep a backup plan handy.

F9 2146 was cancelled 4.7% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon66%(35 flights)
  • Tue—(4 flights)
  • Wed—(4 flights)
  • Thu90%(20 flights)
  • Fri68%(38 flights)
  • Sat—(5 flights)
  • Sun77%(34 flights)
On-time by departure window
  • 12–3 AM50%(20 flights)
  • 6–9 AM93%(28 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM79%(38 flights)
  • 3–6 PM61%(46 flights)
On-time trend by month
57%
Apr

Jul 70% → Apr 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202570%10
August 202569%16
September 202588%16
October 202571%14
November 202580%10
December 202575%12
January 202683%12
February 202673%11
April 202657%21
Departures on time
65%
Diverted
0.7%
Flights flown
140
Months covered
12

Same route, other flights

Keep nerding

Based on 148 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.