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Flight Reliability

DL 3867 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3867 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

86%
Arrive within 15 minutes
9 min
Average arrival delay
2.1%
Cancelled
8 min early
Median arrival delay

Based on 287 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(41 flights)
  • Tue95%(42 flights)
  • Wed98%(42 flights)
  • Thu80%(46 flights)
  • Fri76%(45 flights)
  • Sat84%(25 flights)
  • Sun88%(40 flights)
On-time by departure window
  • 6–9 AM87%(87 flights)
  • 9 AM–12 PM89%(87 flights)
  • 12–3 PM86%(49 flights)
  • 3–6 PM—(2 flights)
  • 6–9 PM78%(55 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
91%
May

Jun 95% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202595%60
July 202577%35
August 202590%10
November 2025100%15
January 202686%22
February 202671%28
March 202676%33
April 202681%26
May 202691%44
Departures on time
86%
Diverted
0%
Flights flown
281
Months covered
10

Keep nerding

Based on 287 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.