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Flight Reliability

DL 1497 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1497 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

59%
Arrive within 15 minutes
27 min
Average arrival delay
1.1%
Cancelled
8 min
Median arrival delay

Based on 646 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon53%(97 flights)
  • Tue64%(88 flights)
  • Wed72%(86 flights)
  • Thu66%(93 flights)
  • Fri60%(97 flights)
  • Sat61%(77 flights)
  • Sun41%(99 flights)
On-time by departure window
  • 3–6 PM56%(359 flights)
  • 6–9 PM63%(278 flights)
On-time trend by month
58%
May

Jun 32% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202532%53
July 202534%53
August 202550%46
September 202569%42
October 202557%47
November 202574%49
December 202573%59
January 202665%52
February 202668%56
March 202657%58
April 202670%60
May 202658%62
Departures on time
59%
Diverted
0.3%
Flights flown
637
Months covered
12

Keep nerding

Based on 646 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.