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Flight Reliability

DL 1285 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1285 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

79%
Arrive within 15 minutes
9 min
Average arrival delay
2.1%
Cancelled
8 min early
Median arrival delay

Based on 328 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(46 flights)
  • Tue73%(45 flights)
  • Wed87%(47 flights)
  • Thu85%(46 flights)
  • Fri77%(47 flights)
  • Sat89%(44 flights)
  • Sun60%(45 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM90%(162 flights)
  • 9 AM–12 PM85%(41 flights)
  • 9 PM–12 AM63%(116 flights)
On-time trend by month
90%
May

Jun 60% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202540%30
August 202572%29
September 202587%30
November 202586%22
December 202587%31
January 202687%30
February 202689%27
March 202689%28
April 202689%28
May 202690%31
Departures on time
83%
Diverted
0.3%
Flights flown
320
Months covered
12

Keep nerding

Based on 328 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.