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Flight Reliability

DL 1573 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1573 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

89%
Arrive within 15 minutes
6 min early
Average arrival delay
2.1%
Cancelled
15 min early
Median arrival delay

Based on 290 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(40 flights)
  • Tue91%(42 flights)
  • Wed98%(40 flights)
  • Thu86%(42 flights)
  • Fri86%(42 flights)
  • Sat86%(35 flights)
  • Sun88%(43 flights)
On-time by departure window
  • 6–9 AM94%(88 flights)
  • 9 AM–12 PM91%(139 flights)
  • 12–3 PM—(3 flights)
  • 9 PM–12 AM82%(54 flights)
On-time trend by month
97%
May

Jun 88% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%24
July 202574%23
August 202582%28
September 202593%30
October 202584%31
November 2025100%30
December 2025100%30
March 202681%21
April 202693%30
May 202697%30
Departures on time
91%
Diverted
0%
Flights flown
284
Months covered
12

Keep nerding

Based on 290 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.