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Flight Reliability

DL 488 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 488 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

71%
Arrive within 15 minutes
17 min
Average arrival delay
2.5%
Cancelled
3 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(52 flights)
  • Tue64%(45 flights)
  • Wed75%(48 flights)
  • Thu75%(47 flights)
  • Fri74%(46 flights)
  • Sat70%(57 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 6–9 AM93%(83 flights)
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM65%(65 flights)
  • 3–6 PM67%(114 flights)
  • 6–9 PM59%(73 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
47%
May

Jun 52% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%52
July 202556%59
August 202589%26
September 202591%22
October 202596%27
November 202581%16
January 202680%25
February 2026100%11
March 202673%44
April 202678%32
May 202647%30
Departures on time
73%
Diverted
0.3%
Flights flown
344
Months covered
11

Keep nerding

Based on 354 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.