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Flight Reliability

DL 709 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 709 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
6 min
Average arrival delay
2.8%
Cancelled
9 min early
Median arrival delay

Based on 351 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(50 flights)
  • Tue80%(49 flights)
  • Wed80%(49 flights)
  • Thu72%(50 flights)
  • Fri72%(50 flights)
  • Sat90%(39 flights)
  • Sun71%(52 flights)
On-time by departure window
  • 3–6 AM94%(31 flights)
  • 6–9 AM88%(73 flights)
  • 3–6 PM75%(161 flights)
  • 6–9 PM59%(49 flights)
  • 9 PM–12 AM88%(25 flights)
On-time trend by month
87%
May

Jun 52% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%25
July 202565%23
August 202583%29
September 2025100%10
October 202589%27
November 202586%28
December 202583%30
January 202655%29
February 202680%25
March 202673%30
April 202684%31
May 202687%52
Departures on time
79%
Diverted
0.6%
Flights flown
339
Months covered
12

Keep nerding

Based on 351 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.