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Flight Reliability

DL 5091 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5091 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
5 min
Average arrival delay
1.6%
Cancelled
9 min early
Median arrival delay

Based on 306 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(45 flights)
  • Tue82%(45 flights)
  • Wed80%(46 flights)
  • Thu88%(48 flights)
  • Fri79%(48 flights)
  • Sat91%(22 flights)
  • Sun79%(47 flights)
On-time by departure window
  • 6–9 AM87%(182 flights)
  • 9 AM–12 PM72%(25 flights)
  • 12–3 PM70%(54 flights)
  • 3–6 PM83%(40 flights)
On-time trend by month
73%
May

Jun 81% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%26
July 202584%25
August 202596%25
September 202597%29
October 2025100%31
November 202575%28
December 202575%24
January 202686%22
February 202679%14
April 202656%16
May 202673%55
Departures on time
83%
Diverted
0%
Flights flown
301
Months covered
12

Keep nerding

Based on 306 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.