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Flight Reliability

DL 5856 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5856 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

83%
Arrive within 15 minutes
8 min
Average arrival delay
2.8%
Cancelled
10 min early
Median arrival delay

Based on 398 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue77%(52 flights)
  • Wed84%(57 flights)
  • Thu89%(61 flights)
  • Fri78%(60 flights)
  • Sat87%(55 flights)
  • Sun80%(46 flights)
On-time by departure window
  • 6–9 AM85%(46 flights)
  • 9 AM–12 PM86%(178 flights)
  • 12–3 PM79%(118 flights)
  • 3–6 PM86%(14 flights)
  • 6–9 PM71%(24 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
70%
May

Jun 79% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%56
July 202586%62
August 202598%62
September 202564%14
December 202574%27
January 202688%48
February 202684%44
March 202667%12
April 202678%27
May 202670%27
Departures on time
86%
Diverted
1.0%
Flights flown
383
Months covered
12

Keep nerding

Based on 398 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.