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Flight Reliability

DL 4305 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4305 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

86%
Arrive within 15 minutes
1 min early
Average arrival delay
2.2%
Cancelled
14 min early
Median arrival delay

Based on 718 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(102 flights)
  • Tue93%(100 flights)
  • Wed90%(98 flights)
  • Thu88%(96 flights)
  • Fri82%(99 flights)
  • Sat84%(100 flights)
  • Sun85%(103 flights)
On-time by departure window
  • 6–9 AM86%(36 flights)
  • 9 AM–12 PM85%(608 flights)
  • 3–6 PM96%(27 flights)
  • 6–9 PM96%(27 flights)
On-time trend by month
95%
May

Jun 88% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%60
July 202581%62
August 202590%61
September 202593%60
October 202594%62
November 202580%46
December 202582%54
January 202677%57
February 202680%55
March 202680%60
April 202688%59
May 202695%62
Departures on time
86%
Diverted
0.6%
Flights flown
698
Months covered
12

Keep nerding

Based on 718 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.