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Flight Reliability

DL 424 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 424 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

73%
Arrive within 15 minutes
10 min
Average arrival delay
3.1%
Cancelled
10 min early
Median arrival delay

Based on 386 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(53 flights)
  • Tue81%(57 flights)
  • Wed68%(56 flights)
  • Thu62%(55 flights)
  • Fri83%(54 flights)
  • Sat81%(42 flights)
  • Sun67%(57 flights)
On-time by departure window
  • 6–9 AM95%(59 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM66%(261 flights)
  • 9 PM–12 AM84%(44 flights)
On-time trend by month
83%
May

Jun 57% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%30
July 202548%27
August 202577%30
September 202582%27
October 202557%30
November 202568%28
December 202567%30
January 202693%30
February 202696%26
March 202676%46
April 202675%40
May 202683%30
Departures on time
75%
Diverted
0%
Flights flown
374
Months covered
12

Keep nerding

Based on 386 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.