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Flight Reliability

DL 1624 · Delta Air Lines

Memphis → Atlanta (MEM–ATL)

85
Pretty Reliable
WanderNerd Reliability Score
90%
Arrive within 15 minutes
4 min early
Average arrival delay
3.3%
Cancelled
15 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

The 3–6 AM departure wins.

DL 1624 departing between 3–6 AM arrived on time 100% of the time, versus 90% between 6–9 AM.

Wednesday is the weak spot.

DL 1624 arrived on time 96% of the time on Thursdays. On Wednesdays: 85%.

A bit ahead of the MEM–ATL route.

DL 1624 arrived on time 90% of the time, versus 87% across the MEM–ATL route.

Better than the Delta Air Lines network average.

DL 1624 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon90%(52 flights)
  • Tue92%(52 flights)
  • Wed85%(52 flights)
  • Thu96%(52 flights)
  • Fri96%(50 flights)
  • Sat88%(48 flights)
  • Sun85%(47 flights)
On-time by departure window
  • 3–6 AM100%(24 flights)
  • 6–9 AM90%(329 flights)
On-time trend by month
97%
May

Jun 86% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%28
July 202587%31
August 2025100%29
September 202593%30
October 202587%31
November 202593%30
December 202590%30
January 202686%29
February 202693%27
March 202683%29
April 202690%30
May 202697%29
Departures on time
92%
Diverted
0%
Flights flown
353
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.