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Flight Reliability

DL 5535 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5535 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

72%
Arrive within 15 minutes
12 min
Average arrival delay
1.1%
Cancelled
8 min early
Median arrival delay

Based on 374 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(52 flights)
  • Tue77%(51 flights)
  • Wed77%(51 flights)
  • Thu77%(52 flights)
  • Fri58%(52 flights)
  • Sat76%(58 flights)
  • Sun62%(53 flights)
On-time by departure window
  • 9 AM–12 PM87%(69 flights)
  • 3–6 PM56%(18 flights)
  • 6–9 PM76%(45 flights)
  • 9 PM–12 AM68%(237 flights)
On-time trend by month
61%
May

Jun 52% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%21
July 202558%31
August 202568%31
September 202588%25
October 202584%31
November 202577%30
December 202560%30
January 202677%35
February 202681%37
March 202668%37
April 202680%30
May 202661%31
Departures on time
71%
Diverted
0.3%
Flights flown
369
Months covered
12

Keep nerding

Based on 374 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.