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Flight Reliability

WN 4529 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4529 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

71%
Arrive within 15 minutes
20 min
Average arrival delay
1.1%
Cancelled
1 min
Median arrival delay

Based on 190 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon56%(32 flights)
  • Tue79%(19 flights)
  • Wed100%(20 flights)
  • Thu78%(37 flights)
  • Fri67%(39 flights)
  • Sat82%(11 flights)
  • Sun52%(29 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM—(2 flights)
  • 12–3 PM65%(34 flights)
  • 3–6 PM68%(95 flights)
  • 6–9 PM72%(43 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
50%
May

Jun 83% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%24
July 202567%27
August 202593%14
September 202515%13
February 202689%26
March 202669%29
April 202682%27
May 202650%26
Departures on time
66%
Diverted
0.5%
Flights flown
187
Months covered
9

Keep nerding

Based on 190 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.