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Route Reliability

Salt Lake City → HLN

SLC–HLN · 402 miles · Salt Lake City International Airport to HLN Airport

100
Nerd Approved
WanderNerd Reliability Score
98%
Arrive within 15 minutes
13 min early
Average arrival delay
0.3%
Cancelled
725
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 98% of the time across 725 flights. No comparison to make.

What the data says

Departure time hasn't mattered much.

On-time rates stay between 97% and 98% across the day.

Saturday has been the better bet.

A small edge: 99% on time on Saturdays against 95% on Mondays.

It basically never cancels.

Out of 725 scheduled flights, only 0.3% were cancelled.

Best historical flights

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

Top flights by on-time rate

The breakdown

On-time by weekday
  • Mon95%(104 flights)
  • Tue98%(104 flights)
  • Wed97%(102 flights)
  • Thu96%(101 flights)
  • Fri98%(104 flights)
  • Sat99%(103 flights)
  • Sun99%(105 flights)
On-time by departure window
  • 9 AM–12 PM97%(358 flights)
  • 6–9 PM98%(216 flights)
  • 9 PM–12 AM97%(149 flights)
On-time trend by month
98%
May

Jun 98% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202598%60
July 202597%62
August 202598%62
September 202598%60
October 2025100%62
November 202597%57
December 2025100%59
January 202695%61
February 202693%56
March 202697%62
April 202698%60
May 202698%62

Keep nerding

Based on 725 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.