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Flight Reliability

DL 4102 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4102 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

83%
Arrive within 15 minutes
6 min
Average arrival delay
1.2%
Cancelled
8 min early
Median arrival delay

Based on 413 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(58 flights)
  • Tue85%(59 flights)
  • Wed91%(57 flights)
  • Thu93%(56 flights)
  • Fri78%(59 flights)
  • Sat84%(57 flights)
  • Sun75%(61 flights)
On-time by departure window
  • 6–9 AM84%(101 flights)
  • 9 AM–12 PM86%(94 flights)
  • 3–6 PM88%(50 flights)
  • 6–9 PM78%(162 flights)
On-time trend by month
84%
May

Jul 46% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202546%22
August 202586%49
September 202595%60
October 2025100%10
November 202590%38
December 202559%46
January 202686%29
February 202693%27
March 202687%31
April 202680%30
May 202684%56
Departures on time
85%
Diverted
0.2%
Flights flown
407
Months covered
12

Keep nerding

Based on 413 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.