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Flight Reliability

WN 4533 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4533 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
5 min
Average arrival delay
0%
Cancelled
3 min early
Median arrival delay

Based on 268 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(32 flights)
  • Tue94%(33 flights)
  • Wed87%(30 flights)
  • Thu72%(32 flights)
  • Fri78%(37 flights)
  • Sat81%(62 flights)
  • Sun55%(42 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM96%(24 flights)
  • 9 AM–12 PM86%(44 flights)
  • 12–3 PM67%(39 flights)
  • 3–6 PM82%(72 flights)
  • 6–9 PM67%(75 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
80%
May

Jun 65% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%26
July 202577%31
August 202575%47
September 202596%46
October 202547%15
December 202546%11
February 202680%10
March 202671%17
April 202685%27
May 202680%30
Departures on time
75%
Diverted
0%
Flights flown
268
Months covered
12

Keep nerding

Based on 268 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.