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Flight Reliability

DL 2025 · Delta Air Lines

Orlando → Salt Lake City (MCO–SLC)96% of its flights flew this route. The rest (EWR–ATL) are included in these numbers.

99
Nerd Approved
WanderNerd Reliability Score
95%
Arrive within 15 minutes
6 min early
Average arrival delay
0.8%
Cancelled
11 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 100% of the time, against 94% between 6–9 AM.

Monday is the weak spot.

DL 2025 arrived on time 98% of the time on Thursdays. On Mondays: 87%.

Better than the MCO–SLC route average.

DL 2025 arrived on time 95% of the time, versus 83% across the MCO–SLC route.

Better than the Delta Air Lines network average.

DL 2025 arrived on time 95% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon87%(52 flights)
  • Tue92%(51 flights)
  • Wed96%(52 flights)
  • Thu98%(52 flights)
  • Fri96%(51 flights)
  • Sat98%(51 flights)
  • Sun94%(53 flights)
On-time by departure window
  • 6–9 AM94%(347 flights)
  • 6–9 PM100%(15 flights)
On-time trend by month
97%
May

Jun 97% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202583%30
August 2025100%31
September 202593%30
October 202597%31
November 202593%30
December 202593%30
January 202690%31
February 202696%28
March 202697%30
April 202697%30
May 202697%31
Departures on time
93%
Diverted
0%
Flights flown
362
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.