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Flight Reliability

DL 4145 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4145 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
10 min early
Median arrival delay

Based on 704 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(101 flights)
  • Tue91%(101 flights)
  • Wed98%(99 flights)
  • Thu86%(99 flights)
  • Fri91%(98 flights)
  • Sat91%(100 flights)
  • Sun96%(102 flights)
On-time by departure window
  • 12–3 PM91%(363 flights)
  • 3–6 PM93%(337 flights)
On-time trend by month
92%
May

Jun 97% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%60
July 202587%62
August 202597%62
September 202588%60
October 202594%62
November 202597%59
December 202584%62
January 202687%60
February 202693%56
March 202695%60
April 202692%60
May 202692%37
Departures on time
92%
Diverted
0%
Flights flown
700
Months covered
12

Keep nerding

Based on 704 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.