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Flight Reliability

DL 935 · Delta Air Lines

Detroit → Salt Lake City (DTW–SLC)

97
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
2 min early
Average arrival delay
0%
Cancelled
6 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Wednesday is the weak spot.

DL 935 arrived on time 94% of the time on Fridays. On Wednesdays: 83%.

Better than the DTW–SLC route average.

DL 935 arrived on time 89% of the time, versus 81% across the DTW–SLC route.

Better than the Delta Air Lines network average.

DL 935 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.0% were cancelled.

The breakdown

On-time by weekday
  • Mon90%(52 flights)
  • Tue89%(52 flights)
  • Wed83%(52 flights)
  • Thu92%(52 flights)
  • Fri94%(52 flights)
  • Sat89%(52 flights)
  • Sun87%(53 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202584%31
August 202597%31
September 202593%30
October 202594%31
November 202593%30
December 202558%31
January 202677%31
February 202693%28
March 202694%31
April 202697%30
May 202697%31
Departures on time
92%
Diverted
0%
Flights flown
365
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.