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Flight Reliability

DL 3669 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3669 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

81%
Arrive within 15 minutes
8 min
Average arrival delay
1.1%
Cancelled
8 min early
Median arrival delay

Based on 348 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(49 flights)
  • Tue92%(49 flights)
  • Wed84%(49 flights)
  • Thu76%(49 flights)
  • Fri74%(50 flights)
  • Sat86%(49 flights)
  • Sun71%(49 flights)
On-time by departure window
  • 3–6 PM74%(136 flights)
  • 6–9 PM81%(96 flights)
  • 9 PM–12 AM88%(112 flights)
On-time trend by month
61%
May

Aug 82% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202582%22
September 202587%30
October 2025100%31
November 202583%29
December 202575%24
January 202690%58
February 202680%56
March 202679%14
April 202678%18
May 202661%56
Departures on time
81%
Diverted
0%
Flights flown
344
Months covered
11

Keep nerding

Based on 348 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.