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Flight Reliability

DL 1016 · Delta Air Lines

Seattle → Salt Lake City (SEA–SLC)

94
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
6 min early
Average arrival delay
0.8%
Cancelled
13 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 96% of the time, against 90% between 9 AM–12 PM.

Skip Saturday if you can.

DL 1016 arrived on time 94% of the time on Sundays. On Saturdays: 86%.

Better than the SEA–SLC route average.

DL 1016 arrived on time 91% of the time, versus 84% across the SEA–SLC route.

Better than the Delta Air Lines network average.

DL 1016 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon92%(51 flights)
  • Tue90%(52 flights)
  • Wed92%(51 flights)
  • Thu89%(52 flights)
  • Fri90%(52 flights)
  • Sat86%(49 flights)
  • Sun94%(52 flights)
On-time by departure window
  • 6–9 AM96%(22 flights)
  • 9 AM–12 PM90%(337 flights)
On-time trend by month
94%
May

Jun 93% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202597%31
August 202590%29
September 202593%30
October 202584%31
November 202590%29
December 202581%31
January 202687%31
February 202692%26
March 202697%30
April 202690%30
May 202694%31
Departures on time
90%
Diverted
0.3%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.