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Flight Reliability

DL 1552 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1552 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
4 min
Average arrival delay
1.0%
Cancelled
9 min early
Median arrival delay

Based on 390 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(54 flights)
  • Tue89%(56 flights)
  • Wed86%(57 flights)
  • Thu89%(56 flights)
  • Fri86%(56 flights)
  • Sat88%(49 flights)
  • Sun81%(57 flights)
On-time by departure window
  • 3–6 AM95%(118 flights)
  • 6–9 AM—(5 flights)
  • 9 AM–12 PM80%(20 flights)
  • 12–3 PM80%(208 flights)
  • 3–6 PM88%(34 flights)
On-time trend by month
94%
May

Jun 77% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202565%31
August 202573%30
September 202577%30
October 202594%31
November 202593%30
December 202590%31
January 202694%35
February 202691%45
March 202679%34
April 2026100%27
May 202694%31
Departures on time
88%
Diverted
0.3%
Flights flown
385
Months covered
12

Keep nerding

Based on 390 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.