Skip to content
WanderNerd
Check a flight

Flight Reliability

F9 3923 · Frontier Airlines

Atlanta → Las Vegas (ATL–LAS)

42
Bring Snacks
WanderNerd Reliability Score
59%
Arrive within 15 minutes
30 min
Average arrival delay
3.1%
Cancelled
1 min
Median arrival delay

Based on 259 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

F9 3923 departing between 9 PM–12 AM arrived on time 70% of the time, versus 59% between 6–9 PM.

Tuesdays have been rough.

F9 3923 arrived on time 80% of the time on Wednesdays and just 48% on Tuesdays. That gap is worth planning around.

Well behind the ATL–LAS route.

F9 3923 arrived on time 59% of the time, versus 76% across the ATL–LAS route.

Lagging the Frontier Airlines network.

F9 3923 arrived on time 59% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon49%(47 flights)
  • Tue48%(21 flights)
  • Wed80%(20 flights)
  • Thu62%(50 flights)
  • Fri61%(46 flights)
  • Sat61%(23 flights)
  • Sun62%(42 flights)
On-time by departure window
  • 3–6 PM—(1 flights)
  • 6–9 PM59%(238 flights)
  • 9 PM–12 AM70%(10 flights)
On-time trend by month
61%
May

Jun 20% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202520%10
July 202556%16
August 202553%17
September 202556%18
October 202571%21
November 202567%21
December 202550%22
January 202665%23
February 202674%27
March 202643%28
April 202678%18
May 202661%28
Departures on time
54%
Diverted
0.8%
Flights flown
249
Months covered
12

Same route, other flights

Keep nerding

Based on 259 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.