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Flight Reliability

WN 3583 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3583 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

75%
Arrive within 15 minutes
8 min
Average arrival delay
0.6%
Cancelled
1 min
Median arrival delay

Based on 320 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(47 flights)
  • Tue72%(47 flights)
  • Wed72%(47 flights)
  • Thu70%(46 flights)
  • Fri71%(49 flights)
  • Sat91%(46 flights)
  • Sun83%(35 flights)
On-time by departure window
  • 6–9 AM100%(23 flights)
  • 9 AM–12 PM91%(79 flights)
  • 12–3 PM76%(71 flights)
  • 3–6 PM56%(55 flights)
  • 6–9 PM60%(57 flights)
  • 9 PM–12 AM75%(32 flights)
On-time trend by month
70%
May

Aug 73% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202573%41
September 202568%47
October 2025100%35
November 202566%29
December 202555%33
March 202677%26
April 202685%46
May 202670%46
Departures on time
70%
Diverted
0.3%
Flights flown
317
Months covered
11

Keep nerding

Based on 320 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.