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Flight Reliability

DL 1246 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1246 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

87%
Arrive within 15 minutes
2 min early
Average arrival delay
1.8%
Cancelled
11 min early
Median arrival delay

Based on 684 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(95 flights)
  • Tue94%(99 flights)
  • Wed92%(99 flights)
  • Thu85%(97 flights)
  • Fri86%(95 flights)
  • Sat85%(86 flights)
  • Sun82%(98 flights)
On-time by departure window
  • 12–3 PM88%(421 flights)
  • 3–6 PM84%(225 flights)
  • 9 PM–12 AM83%(23 flights)
On-time trend by month
91%
May

Jun 85% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%59
July 202586%56
August 202583%60
September 202597%60
October 202589%62
November 202585%60
December 202578%60
January 202693%45
February 202695%38
March 202678%51
April 202683%60
May 202691%58
Departures on time
86%
Diverted
0.4%
Flights flown
669
Months covered
12

Keep nerding

Based on 684 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.