Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 1197 · Delta Air Lines

Salt Lake City → Los Angeles (SLC–LAX)93% of its flights flew this route. The rest (MSP–LAX) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min early
Average arrival delay
0.4%
Cancelled
10 min early
Median arrival delay

Based on 279 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 1197 arrived on time 91% of the time on Wednesdays. On Sundays: 78%.

A bit behind the SLC–LAX route.

DL 1197 arrived on time 83% of the time, versus 87% across the SLC–LAX route.

Ticking up lately.

DL 1197 arrived on time 86% of the time over the last three months in the data, compared with 79% in the three months before that.

The breakdown

On-time by weekday
  • Mon90%(49 flights)
  • Tue80%(45 flights)
  • Wed91%(44 flights)
  • Thu84%(45 flights)
  • Fri78%(46 flights)
  • Sat—(4 flights)
  • Sun78%(45 flights)
On-time by departure window
  • 6–9 AM84%(19 flights)
  • 9 PM–12 AM83%(259 flights)
On-time trend by month
88%
May

Jun 81% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%26
July 202565%26
August 202596%25
September 202589%26
October 202574%23
November 202594%17
December 202591%21
January 202664%14
February 202682%22
March 202693%27
April 202677%26
May 202688%25
Departures on time
81%
Diverted
0%
Flights flown
278
Months covered
12

Same route, other flights

Keep nerding

Based on 279 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.