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Flight Reliability

WN 3240 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3240 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

78%
Arrive within 15 minutes
3 min
Average arrival delay
0.3%
Cancelled
5 min early
Median arrival delay

Based on 319 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(48 flights)
  • Tue89%(52 flights)
  • Wed88%(51 flights)
  • Thu71%(51 flights)
  • Fri70%(47 flights)
  • Sat93%(29 flights)
  • Sun70%(40 flights)
On-time by departure window
  • 3–6 AM100%(21 flights)
  • 6–9 AM99%(66 flights)
  • 9 AM–12 PM81%(16 flights)
  • 12–3 PM73%(149 flights)
  • 3–6 PM56%(25 flights)
  • 6–9 PM66%(41 flights)
On-time trend by month
50%
May

Jun 62% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%26
July 202572%29
August 202594%31
September 202590%30
October 202557%14
November 2025100%23
December 202595%20
January 202696%28
February 202689%28
March 202664%22
April 202670%33
May 202650%34
Departures on time
78%
Diverted
0%
Flights flown
318
Months covered
12

Keep nerding

Based on 319 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.