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Flight Reliability

WN 236 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 236 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
6 min
Average arrival delay
0.2%
Cancelled
3 min early
Median arrival delay

Based on 456 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(57 flights)
  • Tue88%(57 flights)
  • Wed83%(57 flights)
  • Thu85%(61 flights)
  • Fri73%(64 flights)
  • Sat91%(70 flights)
  • Sun73%(89 flights)
On-time by departure window
  • 3–6 AM95%(38 flights)
  • 6–9 AM92%(119 flights)
  • 9 AM–12 PM94%(108 flights)
  • 12–3 PM66%(107 flights)
  • 3–6 PM64%(56 flights)
  • 6–9 PM65%(26 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
94%
May

Jun 75% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%48
July 202583%48
August 202590%39
September 202585%34
October 202577%31
November 202586%44
December 202569%35
January 202675%32
February 202667%42
March 202680%40
April 2026100%31
May 202694%31
Departures on time
81%
Diverted
0%
Flights flown
455
Months covered
12

Keep nerding

Based on 456 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.