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Flight Reliability

DL 3927 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3927 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

76%
Arrive within 15 minutes
19 min
Average arrival delay
0.9%
Cancelled
4 min early
Median arrival delay

Based on 545 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(77 flights)
  • Tue75%(79 flights)
  • Wed80%(79 flights)
  • Thu77%(78 flights)
  • Fri76%(78 flights)
  • Sat76%(70 flights)
  • Sun74%(78 flights)
On-time by departure window
  • 6–9 AM86%(107 flights)
  • 9 AM–12 PM85%(60 flights)
  • 12–3 PM71%(303 flights)
  • 3–6 PM75%(69 flights)
On-time trend by month
93%
May

Jun 53% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%53
July 202569%62
August 202573%62
September 202590%60
October 202574%62
November 202593%14
December 202570%23
January 202675%56
February 202693%56
March 202673%33
April 202668%28
May 202693%30
Departures on time
79%
Diverted
0.2%
Flights flown
539
Months covered
12

Keep nerding

Based on 545 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.