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Flight Reliability

WN 336 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 336 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
9 min
Average arrival delay
0.6%
Cancelled
2 min early
Median arrival delay

Based on 355 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(51 flights)
  • Tue72%(57 flights)
  • Wed71%(59 flights)
  • Thu79%(53 flights)
  • Fri65%(48 flights)
  • Sat92%(39 flights)
  • Sun87%(45 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 6–9 AM95%(65 flights)
  • 9 AM–12 PM90%(95 flights)
  • 12–3 PM61%(31 flights)
  • 3–6 PM66%(126 flights)
  • 6–9 PM—(7 flights)
  • 9 PM–12 AM58%(24 flights)
On-time trend by month
68%
May

Jun 90% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202583%30
August 202575%16
September 202554%13
October 202589%18
November 202563%41
December 202571%45
January 2026100%26
February 202689%26
March 202690%31
April 202668%38
May 202668%38
Departures on time
77%
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.