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Flight Reliability

DL 506 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 506 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

72%
Arrive within 15 minutes
15 min
Average arrival delay
1.7%
Cancelled
2 min early
Median arrival delay

Based on 645 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(89 flights)
  • Tue85%(91 flights)
  • Wed82%(87 flights)
  • Thu67%(91 flights)
  • Fri64%(90 flights)
  • Sat70%(92 flights)
  • Sun69%(91 flights)
On-time by departure window
  • 6–9 AM79%(358 flights)
  • 3–6 PM42%(33 flights)
  • 6–9 PM65%(240 flights)
On-time trend by month
77%
May

Jun 87% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%53
July 202573%60
August 202555%62
September 202563%59
October 202590%62
November 202571%56
December 202577%48
January 202674%31
February 202671%45
March 202658%57
April 202669%42
May 202677%56
Departures on time
79%
Diverted
0.5%
Flights flown
631
Months covered
12

Keep nerding

Based on 645 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.