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Flight Reliability

DL 4101 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4101 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

81%
Arrive within 15 minutes
16 min
Average arrival delay
0.3%
Cancelled
6 min early
Median arrival delay

Based on 319 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue72%(50 flights)
  • Wed85%(48 flights)
  • Thu88%(49 flights)
  • Fri76%(50 flights)
  • Sat71%(21 flights)
  • Sun82%(50 flights)
On-time by departure window
  • 9 AM–12 PM88%(50 flights)
  • 6–9 PM94%(31 flights)
  • 9 PM–12 AM78%(237 flights)
On-time trend by month
86%
May

Jun 56% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202556%18
July 202574%23
August 202565%20
September 202588%17
October 202597%30
November 202586%28
December 202570%27
January 202676%25
February 202691%22
March 202689%27
April 202677%26
May 202686%55
Departures on time
80%
Diverted
0%
Flights flown
318
Months covered
12

Keep nerding

Based on 319 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.