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Flight Reliability

DL 3972 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3972 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

90%
Arrive within 15 minutes
6 min
Average arrival delay
0.9%
Cancelled
14 min early
Median arrival delay

Based on 235 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(33 flights)
  • Tue91%(33 flights)
  • Wed84%(32 flights)
  • Thu85%(33 flights)
  • Fri88%(34 flights)
  • Sat100%(34 flights)
  • Sun88%(34 flights)
On-time by departure window
  • 3–6 AM92%(145 flights)
  • 6–9 AM86%(88 flights)
On-time trend by month
97%
May

Sep 85% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202585%20
November 202590%20
December 202577%30
January 202687%31
February 202689%28
March 202697%31
April 202690%30
May 202697%31
Departures on time
91%
Diverted
0%
Flights flown
233
Months covered
10

Keep nerding

Based on 235 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.