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Flight Reliability

DL 2874 · Delta Air Lines

Salt Lake City → Seattle (SLC–SEA)

99
Nerd Approved
WanderNerd Reliability Score
92%
Arrive within 15 minutes
6 min early
Average arrival delay
0.3%
Cancelled
10 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 2874 arrived on time 98% of the time on Fridays. On Sundays: 89%.

Better than the SLC–SEA route average.

DL 2874 arrived on time 92% of the time, versus 80% across the SLC–SEA route.

Better than the Delta Air Lines network average.

DL 2874 arrived on time 92% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon92%(51 flights)
  • Tue90%(52 flights)
  • Wed90%(52 flights)
  • Thu94%(52 flights)
  • Fri98%(52 flights)
  • Sat92%(52 flights)
  • Sun89%(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 202590%31
August 202590%31
September 202593%30
October 202590%31
November 202593%30
December 202587%31
January 202697%31
February 202696%28
March 202687%30
April 202693%30
May 202697%31
Departures on time
93%
Diverted
0%
Flights flown
364
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.