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WanderNerd

Flight Reliability

DL 1502 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1502 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

76%
Arrive within 15 minutes
8 min
Average arrival delay
0.3%
Cancelled
5 min early
Median arrival delay

Based on 303 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(44 flights)
  • Tue77%(44 flights)
  • Wed82%(44 flights)
  • Thu80%(45 flights)
  • Fri64%(44 flights)
  • Sat86%(36 flights)
  • Sun73%(45 flights)
On-time by departure window
  • 9 AM–12 PM81%(31 flights)
  • 12–3 PM69%(36 flights)
  • 3–6 PM89%(62 flights)
  • 6–9 PM72%(130 flights)
  • 9 PM–12 AM72%(43 flights)
On-time trend by month
81%
May

Jun 63% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%27
July 202563%27
August 202581%26
September 202565%26
October 202584%25
December 202587%15
January 202675%28
February 202687%31
March 202672%32
April 202680%30
May 202681%31
Departures on time
74%
Diverted
0%
Flights flown
302
Months covered
12

Based on 303 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.