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Flight Reliability

DL 3985 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3985 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

94%
Arrive within 15 minutes
11 min early
Average arrival delay
0.8%
Cancelled
14 min early
Median arrival delay

Based on 238 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon94%(34 flights)
  • Tue100%(32 flights)
  • Wed94%(34 flights)
  • Thu97%(34 flights)
  • Fri97%(33 flights)
  • Sat90%(31 flights)
  • Sun86%(35 flights)
On-time by departure window
  • 6–9 AM—(2 flights)
  • 12–3 PM—(2 flights)
  • 6–9 PM94%(181 flights)
  • 9 PM–12 AM96%(48 flights)
On-time trend by month
97%
May

Oct 96% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202596%25
November 202585%26
December 202593%29
January 2026100%28
February 202682%28
March 202697%30
April 2026100%29
May 202697%29
Departures on time
94%
Diverted
1.3%
Flights flown
233
Months covered
10

Keep nerding

Based on 238 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.