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Flight Reliability

DL 508 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 508 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
1 min early
Average arrival delay
0.3%
Cancelled
9 min early
Median arrival delay

Based on 372 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(57 flights)
  • Tue84%(49 flights)
  • Wed92%(47 flights)
  • Thu90%(57 flights)
  • Fri88%(59 flights)
  • Sat84%(45 flights)
  • Sun88%(57 flights)
On-time by departure window
  • 6–9 AM94%(97 flights)
  • 9 AM–12 PM83%(160 flights)
  • 12–3 PM97%(31 flights)
  • 3–6 PM74%(39 flights)
  • 6–9 PM84%(31 flights)
  • 9 PM–12 AM69%(13 flights)
On-time trend by month
81%
May

Jun 84% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%37
July 202579%33
August 202585%39
September 202593%30
October 202584%31
November 202577%30
December 202579%28
January 202693%30
February 202696%28
March 202690%30
April 2026100%14
May 202681%41
Departures on time
89%
Diverted
0%
Flights flown
371
Months covered
12

Keep nerding

Based on 372 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.