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Route Reliability

STS → Las Vegas

STS–LAS · 454 miles · STS Airport to Harry Reid International Airport

83
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
6 min
Average arrival delay
2.2%
Cancelled
408
Flights in the data

Data through May 2026.

Airlines on this route

  • Alaska Airlines82% on time · 353 flights
  • Southwest Airlines93% on time · 55 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

STS–LAS flights departing between 6–9 AM arrived on time 96% of the time, versus 82% between 12–3 PM.

Friday is doing you no favors.

STS–LAS flights arrived on time 93% of the time on Saturdays and just 73% on Fridays. That gap is worth planning around.

Trending in the right direction.

STS–LAS flights arrived on time 90% of the time over the last three months in the data, compared with 80% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon81%(59 flights)
  • Tue79%(53 flights)
  • Wed92%(52 flights)
  • Thu83%(59 flights)
  • Fri73%(59 flights)
  • Sat93%(58 flights)
  • Sun85%(59 flights)
On-time by departure window
  • 6–9 AM96%(24 flights)
  • 9 AM–12 PM83%(321 flights)
  • 12–3 PM82%(38 flights)
  • 3–6 PM94%(16 flights)
On-time trend by month
86%
May

Jun 80% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202584%31
August 202587%31
September 202583%30
October 202573%30
November 202577%26
December 202565%26
January 202696%24
February 202679%24
March 202694%31
April 202691%54
May 202686%62

Keep nerding

Based on 408 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.