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Flight Reliability

DL 4925 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4925 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

77%
Arrive within 15 minutes
10 min
Average arrival delay
4.5%
Cancelled
8 min early
Median arrival delay

Based on 485 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(61 flights)
  • Tue83%(65 flights)
  • Wed74%(69 flights)
  • Thu76%(67 flights)
  • Fri79%(68 flights)
  • Sat76%(71 flights)
  • Sun68%(62 flights)
On-time by departure window
  • 6–9 AM67%(21 flights)
  • 9 AM–12 PM83%(76 flights)
  • 12–3 PM83%(154 flights)
  • 3–6 PM72%(188 flights)
  • 6–9 PM75%(24 flights)
On-time trend by month
77%
May

Jun 92% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%12
July 202580%49
August 202570%37
September 202583%29
October 202562%29
November 202565%26
December 202553%40
January 202690%58
February 202686%50
March 202678%60
April 202683%42
May 202677%31
Departures on time
78%
Diverted
0%
Flights flown
463
Months covered
12

Keep nerding

Based on 485 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.