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Flight Reliability

DL 5731 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5731 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

83%
Arrive within 15 minutes
2 min early
Average arrival delay
2.6%
Cancelled
13 min early
Median arrival delay

Based on 416 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(62 flights)
  • Tue82%(65 flights)
  • Wed82%(65 flights)
  • Thu79%(66 flights)
  • Fri86%(64 flights)
  • Sat93%(57 flights)
  • Sun89%(26 flights)
On-time by departure window
  • 6–9 AM87%(104 flights)
  • 9 AM–12 PM92%(143 flights)
  • 12–3 PM71%(141 flights)
  • 3–6 PM88%(17 flights)
On-time trend by month
98%
May

Jun 90% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%48
July 202575%44
August 202588%41
September 202563%30
October 202562%45
December 202582%17
January 202684%25
February 202689%26
March 202686%22
April 202687%38
May 202698%62
Departures on time
82%
Diverted
0%
Flights flown
405
Months covered
12

Keep nerding

Based on 416 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.