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Flight Reliability

WN 3576 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3576 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

73%
Arrive within 15 minutes
8 min
Average arrival delay
0.9%
Cancelled
1 min
Median arrival delay

Based on 426 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(76 flights)
  • Tue75%(56 flights)
  • Wed81%(58 flights)
  • Thu67%(79 flights)
  • Fri75%(72 flights)
  • Sat72%(39 flights)
  • Sun45%(42 flights)
On-time by departure window
  • 6–9 AM—(8 flights)
  • 9 AM–12 PM90%(122 flights)
  • 12–3 PM77%(107 flights)
  • 3–6 PM58%(180 flights)
  • 6–9 PM—(5 flights)
On-time trend by month
52%
May

Jun 79% → May 52% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%66
July 202582%67
August 202536%11
October 202592%86
November 202575%24
December 202575%20
January 202668%28
February 202636%28
March 202677%31
April 202647%30
May 202652%31
Departures on time
67%
Diverted
0%
Flights flown
422
Months covered
11

Keep nerding

Based on 426 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.