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Route Reliability

Salt Lake City → Las Vegas

SLC–LAS · 368 miles · Salt Lake City International Airport to Harry Reid International Airport

84
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
7 min
Average arrival delay
0.6%
Cancelled
3,754
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines81%1,719 flights
  2. 2.Frontier Airlines78%502 flights
  3. 3.Southwest Airlines77%1,442 flights

Not enough history to rank: Spirit Airlines (91 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning-you made the right choice.

SLC–LAS flights departing between 3–6 AM arrived on time 97% of the time, versus 72% between 6–9 PM.

Friday is doing you no favors.

SLC–LAS flights arrived on time 88% of the time on Saturdays. On Fridays: 73%.

Delta Air Lines has a slight edge here.

Delta Air Lines arrived on time 81% of the time on this route; Southwest Airlines managed 77%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon75%(574 flights)
  • Tue84%(493 flights)
  • Wed86%(495 flights)
  • Thu74%(571 flights)
  • Fri73%(571 flights)
  • Sat88%(447 flights)
  • Sun76%(576 flights)
On-time by departure window
  • 3–6 AM97%(30 flights)
  • 6–9 AM95%(691 flights)
  • 9 AM–12 PM80%(740 flights)
  • 12–3 PM73%(350 flights)
  • 3–6 PM73%(886 flights)
  • 6–9 PM72%(478 flights)
  • 9 PM–12 AM75%(552 flights)
On-time trend by month
80%
May

Jun 72% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%306
July 202573%298
August 202581%293
September 202578%312
October 202581%320
November 202579%288
December 202579%311
January 202684%317
February 202682%292
March 202681%339
April 202677%338
May 202680%313

Keep nerding

Based on 3,754 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.