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Flight Reliability

DL 2708 · Delta Air Lines

Ontario → Salt Lake City (ONT–SLC)

100
Nerd Approved
WanderNerd Reliability Score
96%
Arrive within 15 minutes
7 min early
Average arrival delay
0.5%
Cancelled
14 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesday comes out ahead.

A small edge: 98% on time on Tuesdays against 92% on Mondays.

A bit ahead of the ONT–SLC route.

DL 2708 arrived on time 96% of the time, versus 92% across the ONT–SLC route.

Better than the Delta Air Lines network average.

DL 2708 arrived on time 96% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 2708 arrived on time 98% of the time over the last three months in the data, compared with 92% in the three months before that.

The breakdown

On-time by weekday
  • Mon92%(50 flights)
  • Tue98%(52 flights)
  • Wed98%(52 flights)
  • Thu94%(52 flights)
  • Fri96%(52 flights)
  • Sat94%(52 flights)
  • Sun96%(53 flights)
On-time trend by month
94%
May

Jun 97% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202594%31
August 202594%31
September 202597%30
October 202597%31
November 2025100%30
December 202584%31
January 202694%31
February 2026100%28
March 2026100%29
April 2026100%30
May 202694%31
Departures on time
95%
Diverted
0%
Flights flown
363
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.