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Flight Reliability

WN 3566 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3566 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 357 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(63 flights)
  • Tue74%(39 flights)
  • Wed90%(39 flights)
  • Thu80%(64 flights)
  • Fri82%(65 flights)
  • Sat89%(36 flights)
  • Sun81%(47 flights)
On-time by departure window
  • 6–9 AM92%(166 flights)
  • 9 AM–12 PM77%(57 flights)
  • 12–3 PM65%(23 flights)
  • 3–6 PM84%(69 flights)
  • 6–9 PM—(2 flights)
  • 9 PM–12 AM53%(36 flights)
On-time trend by month
88%
May

Jun 90% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%29
July 202577%30
August 202588%41
September 202595%43
November 202571%28
December 202577%31
January 202684%31
February 202680%25
March 202674%54
April 202683%24
May 202688%16
Departures on time
80%
Diverted
0.3%
Flights flown
353
Months covered
12

Keep nerding

Based on 357 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.