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Flight Reliability

DL 1588 · Delta Air Lines

Atlanta → Miami (ATL–MIA)

61
A Little Dicey
WanderNerd Reliability Score
64%
Arrive within 15 minutes
21 min
Average arrival delay
1.4%
Cancelled
4 min
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 1588 arrived on time 71% of the time on Wednesdays. On Sundays: 59%.

A bit behind the ATL–MIA route.

DL 1588 arrived on time 64% of the time, versus 71% across the ATL–MIA route.

Well behind the Delta Air Lines network.

DL 1588 arrived on time 64% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 1588 arrived on time 70% of the time over the last three months in the data, compared with 62% in the three months before that.

The breakdown

On-time by weekday
  • Mon64%(52 flights)
  • Tue65%(52 flights)
  • Wed71%(52 flights)
  • Thu64%(50 flights)
  • Fri65%(51 flights)
  • Sat59%(51 flights)
  • Sun59%(51 flights)
On-time by departure window
  • 6–9 PM64%(358 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
65%
May

Jun 43% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%30
July 202553%30
August 202561%31
September 202573%30
October 202574%31
November 202564%28
December 202547%30
January 202661%31
February 202679%28
March 202672%29
April 202673%30
May 202665%31
Departures on time
64%
Diverted
0%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.