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Flight Reliability

WN 3528 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3528 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

81%
Arrive within 15 minutes
9 min
Average arrival delay
0.6%
Cancelled
4 min early
Median arrival delay

Based on 355 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(49 flights)
  • Tue85%(61 flights)
  • Wed78%(59 flights)
  • Thu76%(45 flights)
  • Fri82%(50 flights)
  • Sat75%(48 flights)
  • Sun80%(40 flights)
On-time by departure window
  • 6–9 AM94%(34 flights)
  • 9 AM–12 PM85%(107 flights)
  • 12–3 PM84%(111 flights)
  • 3–6 PM83%(12 flights)
  • 6–9 PM68%(60 flights)
  • 9 PM–12 AM64%(28 flights)
On-time trend by month
83%
May

Jun 93% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%27
July 202581%31
August 202577%39
September 202587%38
November 202588%32
December 202575%44
March 202662%34
April 202683%47
May 202683%47
Departures on time
79%
Diverted
0.3%
Flights flown
352
Months covered
12

Keep nerding

Based on 355 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.