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Flight Reliability

DL 4930 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4930 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

86%
Arrive within 15 minutes
6 min
Average arrival delay
2.1%
Cancelled
8 min early
Median arrival delay

Based on 532 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(97 flights)
  • Tue81%(31 flights)
  • Wed87%(92 flights)
  • Thu98%(98 flights)
  • Fri87%(95 flights)
  • Sat—(8 flights)
  • Sun82%(91 flights)
On-time by departure window
  • 6–9 AM89%(254 flights)
  • 9 AM–12 PM83%(257 flights)
  • 12–3 PM—(1 flights)
On-time trend by month
76%
May

Jun 86% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%50
July 202583%46
August 202586%50
September 202596%46
October 202591%45
November 202586%28
December 202579%48
January 202681%41
February 202686%35
March 202696%45
April 202690%41
May 202676%37
Departures on time
86%
Diverted
1.7%
Flights flown
512
Months covered
12

Keep nerding

Based on 532 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.