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Flight Reliability

DL 4923 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4923 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

67%
Arrive within 15 minutes
15 min
Average arrival delay
9.1%
Cancelled
6 min early
Median arrival delay

Based on 416 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(53 flights)
  • Tue72%(57 flights)
  • Wed62%(53 flights)
  • Thu68%(53 flights)
  • Fri71%(55 flights)
  • Sat75%(51 flights)
  • Sun58%(55 flights)
On-time by departure window
  • 12–3 PM67%(232 flights)
  • 3–6 PM69%(111 flights)
  • 6–9 PM70%(33 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
67%
May

Jun 62% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%47
July 202554%41
August 202589%37
September 202587%30
October 202563%30
November 202555%29
December 202542%26
January 202667%48
February 202683%41
March 202669%16
May 202667%24
Departures on time
72%
Diverted
0.2%
Flights flown
377
Months covered
12

Keep nerding

Based on 416 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.