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Flight Reliability

DL 5425 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5425 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

82%
Arrive within 15 minutes
7 min
Average arrival delay
1.7%
Cancelled
10 min early
Median arrival delay

Based on 593 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(89 flights)
  • Tue84%(89 flights)
  • Wed89%(87 flights)
  • Thu79%(82 flights)
  • Fri85%(80 flights)
  • Sat79%(71 flights)
  • Sun82%(85 flights)
On-time by departure window
  • 6–9 AM56%(16 flights)
  • 9 AM–12 PM83%(454 flights)
  • 12–3 PM83%(109 flights)
  • 3–6 PM—(4 flights)
On-time trend by month
89%
May

Jun 64% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%58
July 202590%59
August 202595%58
September 202586%59
October 202595%62
November 202587%52
December 202570%50
January 202673%40
March 202665%48
April 202687%60
May 202689%37
Departures on time
80%
Diverted
0%
Flights flown
583
Months covered
11

Keep nerding

Based on 593 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.