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Flight Reliability

WN 1580 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1580 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
3 min
Average arrival delay
0.8%
Cancelled
6 min early
Median arrival delay

Based on 388 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(62 flights)
  • Tue77%(51 flights)
  • Wed75%(52 flights)
  • Thu88%(60 flights)
  • Fri92%(63 flights)
  • Sat86%(49 flights)
  • Sun83%(48 flights)
On-time by departure window
  • 3–6 AM87%(15 flights)
  • 6–9 AM90%(102 flights)
  • 9 AM–12 PM91%(108 flights)
  • 12–3 PM78%(100 flights)
  • 3–6 PM78%(18 flights)
  • 6–9 PM60%(25 flights)
  • 9 PM–12 AM29%(17 flights)
On-time trend by month
91%
May

Jun 67% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%18
July 202556%18
August 202597%39
September 202584%43
October 202565%26
November 202593%30
December 202581%32
January 202683%30
February 202675%32
March 202679%63
April 202691%32
May 202691%22
Departures on time
78%
Diverted
0%
Flights flown
385
Months covered
12

Keep nerding

Based on 388 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.