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WanderNerd

Flight Reliability

DL 3248 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3248 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

80%
Arrive within 15 minutes
7 min
Average arrival delay
0.5%
Cancelled
0 min
Median arrival delay

Based on 388 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(56 flights)
  • Tue91%(56 flights)
  • Wed82%(56 flights)
  • Thu82%(56 flights)
  • Fri69%(54 flights)
  • Sat77%(52 flights)
  • Sun75%(56 flights)
On-time by departure window
  • 9 AM–12 PM82%(193 flights)
  • 3–6 PM77%(193 flights)
On-time trend by month
71%
Dec

Jun 68% → Dec 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%44
July 202590%62
August 202571%62
September 202580%60
October 202587%60
November 202583%60
December 202571%38
Departures on time
85%
Diverted
0%
Flights flown
386
Months covered
7

Based on 388 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.