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Flight Reliability

DL 1323 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1323 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

56%
Arrive within 15 minutes
31 min
Average arrival delay
1.8%
Cancelled
9 min
Median arrival delay

Based on 649 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon56%(97 flights)
  • Tue64%(85 flights)
  • Wed66%(87 flights)
  • Thu62%(96 flights)
  • Fri54%(94 flights)
  • Sat60%(77 flights)
  • Sun37%(99 flights)
On-time by departure window
  • 12–3 PM68%(135 flights)
  • 3–6 PM56%(353 flights)
  • 6–9 PM47%(130 flights)
  • 9 PM–12 AM47%(17 flights)
On-time trend by month
61%
May

Jun 32% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202532%57
July 202542%60
August 202553%45
September 202553%49
October 202549%49
November 202561%38
December 202565%51
January 202666%59
February 202670%56
March 202665%57
April 202662%60
May 202661%54
Departures on time
56%
Diverted
0.3%
Flights flown
635
Months covered
12

Keep nerding

Based on 649 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.