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Flight Reliability

DL 4111 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4111 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

77%
Arrive within 15 minutes
20 min
Average arrival delay
2.7%
Cancelled
5 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(55 flights)
  • Tue65%(51 flights)
  • Wed89%(53 flights)
  • Thu84%(56 flights)
  • Fri76%(50 flights)
  • Sat83%(36 flights)
  • Sun77%(53 flights)
On-time by departure window
  • 3–6 AM63%(24 flights)
  • 6–9 AM79%(124 flights)
  • 9 AM–12 PM83%(90 flights)
  • 12–3 PM72%(32 flights)
  • 3–6 PM73%(81 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
74%
May

Sep 79% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202579%34
October 202585%58
November 202593%54
December 202558%48
January 202668%28
February 202692%12
March 202658%43
April 2026100%20
May 202674%50
Departures on time
80%
Diverted
0%
Flights flown
354
Months covered
10

Keep nerding

Based on 364 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.