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Flight Reliability

DL 3924 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3924 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

88%
Arrive within 15 minutes
9 min
Average arrival delay
4.5%
Cancelled
10 min early
Median arrival delay

Based on 179 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(22 flights)
  • Tue100%(19 flights)
  • Wed79%(19 flights)
  • Thu96%(22 flights)
  • Fri81%(26 flights)
  • Sat91%(35 flights)
  • Sun89%(28 flights)
On-time by departure window
  • 3–6 AM95%(21 flights)
  • 9 AM–12 PM84%(31 flights)
  • 12–3 PM92%(71 flights)
  • 3–6 PM83%(48 flights)
On-time trend by month
83%
May

Nov 96% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202596%24
December 202581%42
January 202690%10
February 2026100%14
March 202688%17
April 2026100%10
May 202683%48
Departures on time
88%
Diverted
0%
Flights flown
171
Months covered
8

Keep nerding

Based on 179 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.