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Flight Reliability

DL 5177 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5177 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

85%
Arrive within 15 minutes
0 min
Average arrival delay
2.8%
Cancelled
13 min early
Median arrival delay

Based on 533 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(73 flights)
  • Tue83%(76 flights)
  • Wed87%(70 flights)
  • Thu82%(71 flights)
  • Fri87%(74 flights)
  • Sat88%(81 flights)
  • Sun90%(70 flights)
On-time by departure window
  • 6–9 AM88%(93 flights)
  • 9 AM–12 PM85%(393 flights)
  • 12–3 PM—(2 flights)
  • 6–9 PM—(4 flights)
  • 9 PM–12 AM83%(23 flights)
On-time trend by month
100%
May

Jun 84% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%50
July 202571%62
August 202592%62
September 202593%60
October 202597%60
November 202589%52
December 202564%52
January 202679%29
February 202696%24
March 202692%24
April 202683%29
May 2026100%11
Departures on time
86%
Diverted
0.6%
Flights flown
515
Months covered
12

Keep nerding

Based on 533 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.