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Flight Reliability

DL 5665 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5665 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
11 min
Average arrival delay
4.0%
Cancelled
6 min early
Median arrival delay

Based on 622 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(89 flights)
  • Tue73%(99 flights)
  • Wed78%(96 flights)
  • Thu73%(90 flights)
  • Fri65%(91 flights)
  • Sat89%(44 flights)
  • Sun66%(84 flights)
On-time by departure window
  • 12–3 PM95%(20 flights)
  • 3–6 PM78%(310 flights)
  • 6–9 PM63%(263 flights)
On-time trend by month
77%
May

Jun 72% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%47
July 202567%51
August 202582%54
September 202550%54
October 202556%52
November 202572%53
December 202569%45
January 202679%38
February 202688%40
March 202668%53
April 202690%50
May 202677%56
Departures on time
71%
Diverted
0.6%
Flights flown
593
Months covered
12

Keep nerding

Based on 622 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.