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Flight Reliability

DL 686 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 686 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

89%
Arrive within 15 minutes
2 min early
Average arrival delay
2.5%
Cancelled
14 min early
Median arrival delay

Based on 356 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(50 flights)
  • Tue90%(49 flights)
  • Wed88%(50 flights)
  • Thu85%(46 flights)
  • Fri94%(49 flights)
  • Sat94%(51 flights)
  • Sun92%(51 flights)
On-time by departure window
  • 6–9 AM90%(141 flights)
  • 9 AM–12 PM91%(127 flights)
  • 3–6 PM—(9 flights)
  • 9 PM–12 AM86%(69 flights)
On-time trend by month
97%
May

Jun 79% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202586%28
August 202590%31
September 202597%30
October 202584%31
November 202589%27
December 202592%26
January 202693%27
February 202693%27
March 202679%29
April 202690%30
May 202697%31
Departures on time
90%
Diverted
0.3%
Flights flown
346
Months covered
12

Keep nerding

Based on 356 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.