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Flight Reliability

DL 1679 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1679 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

75%
Arrive within 15 minutes
17 min
Average arrival delay
1.3%
Cancelled
5 min early
Median arrival delay

Based on 633 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(90 flights)
  • Tue74%(87 flights)
  • Wed82%(89 flights)
  • Thu67%(91 flights)
  • Fri84%(90 flights)
  • Sat77%(84 flights)
  • Sun66%(90 flights)
On-time by departure window
  • 12–3 PM84%(242 flights)
  • 3–6 PM75%(271 flights)
  • 6–9 PM54%(108 flights)
On-time trend by month
82%
May

Jun 52% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%58
July 202553%61
August 202585%40
September 202587%30
October 202577%52
November 202586%50
December 202560%48
January 202681%48
February 202675%56
March 202680%56
April 202690%60
May 202682%62
Departures on time
76%
Diverted
0.6%
Flights flown
621
Months covered
12

Keep nerding

Based on 633 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.