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Flight Reliability

F9 3019 · Frontier Airlines

Las Vegas → San Francisco (LAS–SFO)

86
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min early
Average arrival delay
1.2%
Cancelled
11 min early
Median arrival delay

Based on 257 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

F9 3019 departing between 6–9 AM arrived on time 87% of the time, versus 78% between 9 AM–12 PM.

Sunday scaries are real for this one.

F9 3019 arrived on time 91% of the time on Tuesdays. On Sundays: 77%.

Well ahead of the LAS–SFO route.

F9 3019 arrived on time 83% of the time, versus 67% across the LAS–SFO route.

Better than the Frontier Airlines network average.

F9 3019 arrived on time 83% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon84%(50 flights)
  • Tue91%(11 flights)
  • Wed87%(15 flights)
  • Thu79%(42 flights)
  • Fri84%(50 flights)
  • Sat90%(39 flights)
  • Sun77%(47 flights)
On-time by departure window
  • 6–9 AM87%(149 flights)
  • 9 AM–12 PM78%(99 flights)
  • 12–3 PM—(6 flights)
On-time trend by month
76%
May

Jun 93% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%28
July 202570%30
August 202574%23
September 202575%20
October 202584%19
November 202578%18
December 202590%19
January 202687%23
February 202678%18
March 2026100%17
April 2026100%18
May 202676%21
Departures on time
85%
Diverted
0%
Flights flown
254
Months covered
12

Same route, other flights

Keep nerding

Based on 257 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.