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Flight Reliability

DL 4647 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4647 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

76%
Arrive within 15 minutes
12 min
Average arrival delay
0.7%
Cancelled
5 min early
Median arrival delay

Based on 274 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(45 flights)
  • Tue76%(33 flights)
  • Wed68%(31 flights)
  • Thu83%(46 flights)
  • Fri78%(45 flights)
  • Sat80%(30 flights)
  • Sun71%(41 flights)
On-time by departure window
  • 9 AM–12 PM67%(15 flights)
  • 12–3 PM75%(16 flights)
  • 3–6 PM77%(240 flights)
On-time trend by month
80%
May

Jun 26% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202526%23
July 202569%26
August 202593%28
September 202596%24
October 202594%31
November 202583%30
December 202563%41
January 202679%14
February 202672%25
May 202680%20
Departures on time
78%
Diverted
0.4%
Flights flown
271
Months covered
11

Keep nerding

Based on 274 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.