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Flight Reliability

DL 4124 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4124 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

92%
Arrive within 15 minutes
6 min early
Average arrival delay
0.6%
Cancelled
11 min early
Median arrival delay

Based on 694 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(102 flights)
  • Tue98%(104 flights)
  • Wed92%(102 flights)
  • Thu89%(102 flights)
  • Fri92%(97 flights)
  • Sat92%(84 flights)
  • Sun90%(99 flights)
On-time by departure window
  • 12–3 PM91%(56 flights)
  • 3–6 PM92%(634 flights)
On-time trend by month
92%
May

Jun 87% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%60
July 202587%60
August 202590%60
September 202592%60
October 202595%61
November 2025100%55
December 202597%62
January 202688%48
February 202693%44
March 202691%58
April 202692%60
May 202692%62
Departures on time
91%
Diverted
0%
Flights flown
690
Months covered
12

Keep nerding

Based on 694 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.