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Flight Reliability

DL 3992 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3992 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

87%
Arrive within 15 minutes
3 min
Average arrival delay
0.6%
Cancelled
8 min early
Median arrival delay

Based on 309 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(43 flights)
  • Tue87%(45 flights)
  • Wed91%(42 flights)
  • Thu76%(42 flights)
  • Fri88%(40 flights)
  • Sat83%(47 flights)
  • Sun92%(47 flights)
On-time by departure window
  • 6–9 AM77%(34 flights)
  • 9 AM–12 PM88%(186 flights)
  • 12–3 PM88%(85 flights)
  • 3–6 PM—(1 flights)
On-time trend by month
84%
May

Aug 81% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202581%21
September 202586%14
December 202591%23
January 202683%35
February 202686%28
March 202689%53
April 202688%60
May 202684%62
Departures on time
87%
Diverted
0.3%
Flights flown
306
Months covered
10

Keep nerding

Based on 309 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.