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Flight Reliability

DL 3500 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3500 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

78%
Arrive within 15 minutes
12 min
Average arrival delay
0.3%
Cancelled
9 min early
Median arrival delay

Based on 310 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(43 flights)
  • Tue71%(45 flights)
  • Wed82%(45 flights)
  • Thu91%(43 flights)
  • Fri66%(41 flights)
  • Sat82%(49 flights)
  • Sun76%(42 flights)
On-time by departure window
  • 6–9 AM75%(129 flights)
  • 9 AM–12 PM78%(167 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM—(6 flights)
On-time trend by month
87%
May

Jun 100% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%14
October 202596%26
December 202548%31
January 202647%30
February 202668%28
March 202682%49
April 202685%60
May 202687%62
Departures on time
80%
Diverted
0.3%
Flights flown
308
Months covered
9

Keep nerding

Based on 310 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.