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Flight Reliability

DL 3679 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3679 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
7 min
Average arrival delay
0%
Cancelled
10 min early
Median arrival delay

Based on 458 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(69 flights)
  • Tue81%(67 flights)
  • Wed85%(65 flights)
  • Thu89%(64 flights)
  • Fri81%(64 flights)
  • Sat86%(59 flights)
  • Sun71%(69 flights)
On-time by departure window
  • 6–9 AM62%(73 flights)
  • 9 AM–12 PM78%(87 flights)
  • 12–3 PM87%(141 flights)
  • 3–6 PM87%(148 flights)
  • 6–9 PM—(8 flights)
On-time trend by month
96%
May

Jun 87% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%15
July 202592%50
August 202568%22
September 202592%36
October 202583%58
November 202566%29
December 202571%28
January 202670%56
February 202661%56
March 202696%56
April 202696%24
May 202696%27
Departures on time
80%
Diverted
0.2%
Flights flown
457
Months covered
12

Keep nerding

Based on 458 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.