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Flight Reliability

DL 4008 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4008 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

91%
Arrive within 15 minutes
1 min early
Average arrival delay
0%
Cancelled
14 min early
Median arrival delay

Based on 226 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(34 flights)
  • Tue82%(34 flights)
  • Wed93%(30 flights)
  • Thu90%(30 flights)
  • Fri97%(34 flights)
  • Sat93%(29 flights)
  • Sun94%(35 flights)
On-time by departure window
  • 3–6 AM93%(147 flights)
  • 6–9 AM89%(28 flights)
  • 3–6 PM78%(18 flights)
  • 9 PM–12 AM91%(33 flights)
On-time trend by month
100%
May

Jun 86% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%22
October 202592%26
December 202571%14
January 202690%31
February 202696%28
March 202687%31
April 202693%30
May 2026100%31
Departures on time
92%
Diverted
0%
Flights flown
226
Months covered
10

Keep nerding

Based on 226 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.