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WanderNerd

Flight Reliability

DL 5781 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5781 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
13 min
Average arrival delay
7.4%
Cancelled
9 min early
Median arrival delay

Based on 323 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(43 flights)
  • Tue74%(46 flights)
  • Wed71%(41 flights)
  • Thu58%(40 flights)
  • Fri78%(46 flights)
  • Sat76%(38 flights)
  • Sun68%(44 flights)
On-time by departure window
  • 6–9 AM86%(29 flights)
  • 9 AM–12 PM86%(28 flights)
  • 12–3 PM(5 flights)
  • 6–9 PM67%(215 flights)
  • 9 PM–12 AM71%(21 flights)
On-time trend by month
76%
May

Jun 69% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%32
July 202548%25
August 202577%30
September 202572%29
October 202570%30
November 202582%27
December 202569%26
February 202682%17
March 202667%24
April 202670%27
May 202676%25
Departures on time
75%
Diverted
0.3%
Flights flown
298
Months covered
12

Based on 323 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.