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Flight Reliability

WN 533 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 533 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
9 min
Average arrival delay
0.5%
Cancelled
5 min early
Median arrival delay

Based on 435 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(67 flights)
  • Tue81%(62 flights)
  • Wed78%(64 flights)
  • Thu71%(68 flights)
  • Fri74%(72 flights)
  • Sat76%(41 flights)
  • Sun66%(59 flights)
On-time by departure window
  • 3–6 AM100%(49 flights)
  • 6–9 AM98%(48 flights)
  • 9 AM–12 PM96%(23 flights)
  • 12–3 PM78%(94 flights)
  • 3–6 PM63%(91 flights)
  • 6–9 PM61%(112 flights)
  • 9 PM–12 AM13%(16 flights)
On-time trend by month
46%
May

Jun 43% → May 46% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%28
July 202547%30
August 202593%27
September 2025100%26
October 202572%43
November 202570%56
December 202577%39
January 202676%33
February 202668%28
March 202693%69
April 202672%32
May 202646%22
Departures on time
71%
Diverted
0%
Flights flown
433
Months covered
12

Keep nerding

Based on 435 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.