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Flight Reliability

DL 897 · Delta Air Lines

Salt Lake City → Atlanta (SLC–ATL)

98
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
7 min early
Average arrival delay
0.5%
Cancelled
12 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Skip Thursday if you can.

DL 897 arrived on time 98% of the time on Sundays. On Thursdays: 89%.

A bit ahead of the SLC–ATL route.

DL 897 arrived on time 93% of the time, versus 87% across the SLC–ATL route.

Better than the Delta Air Lines network average.

DL 897 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.

Slipping a little lately.

DL 897 arrived on time 90% of the time over the last three months in the data, compared with 96% in the three months before that.

The breakdown

On-time by weekday
  • Mon96%(51 flights)
  • Tue90%(52 flights)
  • Wed94%(52 flights)
  • Thu89%(52 flights)
  • Fri90%(52 flights)
  • Sat92%(51 flights)
  • Sun98%(52 flights)
On-time trend by month
100%
May

Jun 76% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%29
July 202597%30
August 202590%31
September 202597%30
October 202597%31
November 2025100%30
December 202593%30
January 202697%31
February 202696%28
March 202681%31
April 202690%30
May 2026100%31
Departures on time
94%
Diverted
0.3%
Flights flown
362
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.