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Flight Reliability

DL 5315 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5315 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

81%
Arrive within 15 minutes
3 min
Average arrival delay
4.9%
Cancelled
14 min early
Median arrival delay

Based on 719 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(99 flights)
  • Tue79%(100 flights)
  • Wed76%(93 flights)
  • Thu79%(93 flights)
  • Fri80%(97 flights)
  • Sat89%(102 flights)
  • Sun84%(98 flights)
On-time by departure window
  • 9 AM–12 PM80%(167 flights)
  • 12–3 PM83%(404 flights)
  • 3–6 PM75%(111 flights)
On-time trend by month
90%
May

Jun 79% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%57
July 202577%56
August 202585%61
September 202582%60
October 202578%60
November 202580%49
December 202572%54
January 202686%55
February 202686%49
March 202679%61
April 202676%58
May 202690%62
Departures on time
79%
Diverted
0.3%
Flights flown
682
Months covered
12

Keep nerding

Based on 719 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.