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Flight Reliability

DL 1512 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1512 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

80%
Arrive within 15 minutes
7 min
Average arrival delay
1.9%
Cancelled
4 min early
Median arrival delay

Based on 670 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(92 flights)
  • Tue81%(95 flights)
  • Wed87%(94 flights)
  • Thu82%(96 flights)
  • Fri81%(95 flights)
  • Sat69%(94 flights)
  • Sun74%(90 flights)
On-time by departure window
  • 9 AM–12 PM82%(356 flights)
  • 12–3 PM77%(300 flights)
On-time trend by month
85%
May

Jun 85% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%58
July 202571%59
August 202571%62
September 202587%60
October 202589%62
November 202588%58
December 202577%60
January 202675%60
February 202671%56
March 202678%37
April 202677%30
May 202685%54
Departures on time
80%
Diverted
0.1%
Flights flown
656
Months covered
12

Keep nerding

Based on 670 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.