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Flight Reliability

F9 2145 · Frontier Airlines

Chicago → Las Vegas (ORD–LAS)

27
Bring Snacks
WanderNerd Reliability Score
61%
Arrive within 15 minutes
46 min
Average arrival delay
6.0%
Cancelled
6 min
Median arrival delay

Based on 149 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 2145 departing between 12–3 PM arrived on time 77% of the time, versus 52% between 6–9 PM.

Sunday comes out ahead.

A small edge: 62% on time on Sundays against 55% on Thursdays.

Lagging the ORD–LAS route.

F9 2145 arrived on time 61% of the time, versus 75% across the ORD–LAS route.

Lagging the Frontier Airlines network.

F9 2145 arrived on time 61% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon57%(35 flights)
  • Tue—(6 flights)
  • Wed—(4 flights)
  • Thu55%(20 flights)
  • Fri61%(36 flights)
  • Sat—(5 flights)
  • Sun62%(34 flights)
On-time by departure window
  • 6–9 AM—(2 flights)
  • 9 AM–12 PM—(2 flights)
  • 12–3 PM77%(22 flights)
  • 3–6 PM—(5 flights)
  • 6–9 PM52%(33 flights)
  • 9 PM–12 AM61%(76 flights)
On-time trend by month
52%
Apr

Jun 70% → Apr 52% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%10
August 202563%16
September 202567%15
October 202557%14
November 202560%10
December 202573%11
January 202662%13
February 202664%11
April 202652%23
Departures on time
59%
Diverted
0%
Flights flown
140
Months covered
12

Same route, other flights

Keep nerding

Based on 149 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.