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Flight Reliability

DL 5803 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5803 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

87%
Arrive within 15 minutes
2 min early
Average arrival delay
2.1%
Cancelled
11 min early
Median arrival delay

Based on 469 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(62 flights)
  • Tue86%(63 flights)
  • Wed91%(65 flights)
  • Thu82%(62 flights)
  • Fri87%(60 flights)
  • Sat96%(67 flights)
  • Sun83%(80 flights)
On-time by departure window
  • 6–9 AM92%(173 flights)
  • 9 AM–12 PM85%(195 flights)
  • 12–3 PM82%(34 flights)
  • 3–6 PM—(9 flights)
  • 6–9 PM79%(48 flights)
On-time trend by month
83%
May

Jun 85% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202592%26
August 202593%44
September 202583%58
October 202584%61
November 202588%59
December 202590%50
January 202689%28
February 202689%26
March 202682%33
April 202688%24
May 202683%23
Departures on time
89%
Diverted
0%
Flights flown
459
Months covered
12

Keep nerding

Based on 469 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.