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Flight Reliability

DL 1529 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1529 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

72%
Arrive within 15 minutes
17 min
Average arrival delay
1.9%
Cancelled
2 min early
Median arrival delay

Based on 422 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(65 flights)
  • Tue74%(62 flights)
  • Wed68%(60 flights)
  • Thu65%(66 flights)
  • Fri67%(66 flights)
  • Sat79%(29 flights)
  • Sun80%(64 flights)
On-time by departure window
  • 9 AM–12 PM79%(24 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM71%(195 flights)
  • 6–9 PM71%(180 flights)
  • 9 PM–12 AM91%(11 flights)
On-time trend by month
79%
May

Jun 62% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%45
July 202574%49
August 202573%48
September 202586%44
October 202582%27
November 202584%19
December 202552%25
January 202684%25
February 202675%16
March 202662%47
April 202663%38
May 202679%29
Departures on time
74%
Diverted
0.5%
Flights flown
412
Months covered
12

Keep nerding

Based on 422 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.