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Flight Reliability

WN 3239 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3239 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
10 min
Average arrival delay
0.3%
Cancelled
2 min early
Median arrival delay

Based on 329 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(47 flights)
  • Tue83%(47 flights)
  • Wed81%(48 flights)
  • Thu76%(46 flights)
  • Fri80%(49 flights)
  • Sat58%(33 flights)
  • Sun81%(58 flights)
On-time by departure window
  • 3–6 AM96%(25 flights)
  • 6–9 AM85%(34 flights)
  • 9 AM–12 PM93%(73 flights)
  • 12–3 PM81%(26 flights)
  • 3–6 PM54%(50 flights)
  • 6–9 PM69%(119 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
47%
May

Jun 93% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202590%31
August 202548%31
September 202557%30
November 202577%35
December 202574%31
January 202691%22
February 2026100%19
March 202694%34
April 202677%31
May 202647%30
Departures on time
70%
Diverted
0%
Flights flown
328
Months covered
12

Keep nerding

Based on 329 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.