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Flight Reliability

DL 5101 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5101 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

64%
Arrive within 15 minutes
45 min
Average arrival delay
8.0%
Cancelled
2 min early
Median arrival delay

Based on 376 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(52 flights)
  • Tue65%(57 flights)
  • Wed67%(58 flights)
  • Thu61%(57 flights)
  • Fri62%(61 flights)
  • Sat—(9 flights)
  • Sun56%(52 flights)
On-time by departure window
  • 9 AM–12 PM55%(11 flights)
  • 12–3 PM81%(36 flights)
  • 3–6 PM71%(44 flights)
  • 6–9 PM61%(255 flights)
On-time trend by month
90%
May

Jun 48% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%23
July 202540%20
August 202577%26
September 202577%26
October 202560%25
November 202548%23
December 202556%32
January 202678%27
February 202682%34
March 202648%46
April 202659%34
May 202690%30
Departures on time
65%
Diverted
0%
Flights flown
346
Months covered
12

Keep nerding

Based on 376 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.