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Flight Reliability

DL 3953 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3953 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

88%
Arrive within 15 minutes
6 min early
Average arrival delay
0.4%
Cancelled
13 min early
Median arrival delay

Based on 730 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(104 flights)
  • Tue88%(104 flights)
  • Wed89%(104 flights)
  • Thu85%(104 flights)
  • Fri88%(103 flights)
  • Sat85%(104 flights)
  • Sun89%(104 flights)
On-time by departure window
  • 6–9 AM94%(399 flights)
  • 9 AM–12 PM80%(328 flights)
On-time trend by month
90%
May

Jun 73% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%60
July 202582%62
August 202592%62
September 202593%60
October 202592%62
November 202591%58
December 202579%62
January 202687%62
February 202696%56
March 202687%61
April 202688%60
May 202690%62
Departures on time
92%
Diverted
0%
Flights flown
727
Months covered
12

Keep nerding

Based on 730 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.