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Flight Reliability

DL 1590 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1590 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

89%
Arrive within 15 minutes
3 min early
Average arrival delay
1.4%
Cancelled
11 min early
Median arrival delay

Based on 585 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(84 flights)
  • Tue78%(85 flights)
  • Wed94%(85 flights)
  • Thu93%(86 flights)
  • Fri92%(84 flights)
  • Sat85%(71 flights)
  • Sun92%(82 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 6–9 AM93%(15 flights)
  • 9 AM–12 PM90%(509 flights)
  • 12–3 PM85%(34 flights)
  • 3–6 PM53%(15 flights)
On-time trend by month
82%
May

Jun 96% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%51
July 202594%62
August 202594%62
September 202593%60
October 202593%60
November 202589%56
December 202573%56
January 202682%33
February 202686%28
March 202687%30
April 202693%29
May 202682%50
Departures on time
88%
Diverted
0%
Flights flown
577
Months covered
12

Keep nerding

Based on 585 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.