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Flight Reliability

DL 3946 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3946 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

72%
Arrive within 15 minutes
18 min
Average arrival delay
2.3%
Cancelled
5 min early
Median arrival delay

Based on 526 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(83 flights)
  • Tue74%(84 flights)
  • Wed69%(81 flights)
  • Thu71%(79 flights)
  • Fri66%(77 flights)
  • Sat70%(30 flights)
  • Sun75%(80 flights)
On-time by departure window
  • 6–9 AM82%(92 flights)
  • 9 AM–12 PM71%(42 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM70%(180 flights)
  • 6–9 PM72%(181 flights)
  • 9 PM–12 AM25%(12 flights)
On-time trend by month
100%
May

Jun 68% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%50
July 202551%45
August 202562%50
September 202589%52
October 202589%52
November 202583%46
December 202540%43
January 202676%25
February 202686%28
March 202674%53
April 202671%58
May 2026100%12
Departures on time
74%
Diverted
0%
Flights flown
514
Months covered
12

Keep nerding

Based on 526 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.