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Flight Reliability

DL 4936 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4936 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

74%
Arrive within 15 minutes
9 min
Average arrival delay
4.1%
Cancelled
5 min early
Median arrival delay

Based on 706 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(95 flights)
  • Tue64%(96 flights)
  • Wed79%(99 flights)
  • Thu77%(96 flights)
  • Fri81%(98 flights)
  • Sat78%(99 flights)
  • Sun74%(92 flights)
On-time by departure window
  • 6–9 AM79%(250 flights)
  • 9 AM–12 PM71%(369 flights)
  • 12–3 PM73%(56 flights)
On-time trend by month
69%
May

Jun 64% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%56
July 202564%59
August 202587%60
September 202588%59
October 202571%62
November 202575%55
December 202563%54
January 202679%52
February 202693%45
March 202664%52
April 202678%60
May 202669%61
Departures on time
79%
Diverted
0.3%
Flights flown
675
Months covered
12

Keep nerding

Based on 706 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.