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Flight Reliability

WN 1583 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1583 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

77%
Arrive within 15 minutes
10 min
Average arrival delay
1.4%
Cancelled
3 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(51 flights)
  • Tue82%(51 flights)
  • Wed74%(50 flights)
  • Thu77%(51 flights)
  • Fri75%(52 flights)
  • Sat86%(43 flights)
  • Sun63%(51 flights)
On-time by departure window
  • 3–6 AM98%(49 flights)
  • 6–9 AM93%(67 flights)
  • 9 AM–12 PM88%(43 flights)
  • 3–6 PM89%(37 flights)
  • 6–9 PM52%(89 flights)
  • 9 PM–12 AM66%(64 flights)
On-time trend by month
46%
May

Jun 42% → May 46% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202542%26
July 202541%29
August 202594%31
September 2025100%30
October 202590%31
November 202590%29
December 202587%31
January 202690%30
February 202689%28
March 202681%31
April 202663%27
May 202646%26
Departures on time
70%
Diverted
0%
Flights flown
349
Months covered
12

Keep nerding

Based on 354 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.