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Flight Reliability

DL 4065 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4065 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

84%
Arrive within 15 minutes
1 min
Average arrival delay
0.2%
Cancelled
11 min early
Median arrival delay

Based on 463 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(68 flights)
  • Tue79%(66 flights)
  • Wed92%(66 flights)
  • Thu80%(66 flights)
  • Fri85%(65 flights)
  • Sat81%(62 flights)
  • Sun83%(69 flights)
On-time by departure window
  • 6–9 AM74%(23 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM91%(167 flights)
  • 3–6 PM86%(213 flights)
  • 6–9 PM64%(52 flights)
On-time trend by month
69%
May

Jun 90% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%60
July 202587%62
August 202594%62
September 202587%60
October 2025100%61
November 202579%14
December 202579%24
January 202676%33
March 202648%21
April 202671%42
May 202669%16
Departures on time
85%
Diverted
0%
Flights flown
462
Months covered
12

Keep nerding

Based on 463 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.