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Flight Reliability

DL 5199 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5199 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

80%
Arrive within 15 minutes
3 min
Average arrival delay
2.8%
Cancelled
10 min early
Median arrival delay

Based on 424 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(57 flights)
  • Tue73%(59 flights)
  • Wed73%(59 flights)
  • Thu83%(60 flights)
  • Fri86%(58 flights)
  • Sat72%(58 flights)
  • Sun83%(60 flights)
On-time by departure window
  • 6–9 AM90%(59 flights)
  • 9 AM–12 PM81%(186 flights)
  • 12–3 PM83%(121 flights)
  • 6–9 PM53%(40 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
53%
May

Jun 57% → May 53% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%51
July 202583%60
August 202584%62
September 202594%54
December 2025100%24
January 202679%33
February 202679%28
March 202687%30
April 202676%29
May 202653%30
Departures on time
79%
Diverted
0.2%
Flights flown
411
Months covered
12

Keep nerding

Based on 424 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.