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Flight Reliability

DL 1614 · Delta Air Lines

Salt Lake City → Ontario (SLC–ONT)96% of its flights flew this route. The rest (RSW–DTW) are included in these numbers.

92
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
4 min
Average arrival delay
0.5%
Cancelled
6 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

9 PM–12 AM has a slight edge.

Departures between 9 PM–12 AM arrived on time 86% of the time, against 80% between 6–9 PM.

Skip Saturday if you can.

DL 1614 arrived on time 90% of the time on Tuesdays. On Saturdays: 81%.

A bit behind the SLC–ONT route.

DL 1614 arrived on time 86% of the time, versus 89% across the SLC–ONT route.

A bit ahead of the Delta Air Lines network.

DL 1614 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon85%(52 flights)
  • Tue90%(52 flights)
  • Wed83%(52 flights)
  • Thu87%(52 flights)
  • Fri90%(52 flights)
  • Sat81%(52 flights)
  • Sun84%(51 flights)
On-time by departure window
  • 3–6 PM—(1 flights)
  • 6–9 PM80%(46 flights)
  • 9 PM–12 AM86%(316 flights)
On-time trend by month
94%
May

Jun 67% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202584%31
August 202581%31
September 202583%30
October 202594%31
November 202590%30
December 202574%31
January 202690%31
February 202689%28
March 202690%29
April 202693%30
May 202694%31
Departures on time
85%
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.