Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1136 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1136 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

86%
Arrive within 15 minutes
1 min
Average arrival delay
0.5%
Cancelled
6 min early
Median arrival delay

Based on 424 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(56 flights)
  • Tue93%(69 flights)
  • Wed94%(69 flights)
  • Thu82%(55 flights)
  • Fri78%(55 flights)
  • Sat90%(59 flights)
  • Sun85%(59 flights)
On-time by departure window
  • 3–6 AM96%(79 flights)
  • 6–9 AM97%(147 flights)
  • 9 AM–12 PM78%(46 flights)
  • 12–3 PM73%(86 flights)
  • 3–6 PM87%(15 flights)
  • 6–9 PM67%(49 flights)
On-time trend by month
86%
May

Jun 76% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%38
July 202587%39
August 202594%31
September 202597%30
October 202572%43
November 202597%33
December 202597%35
January 2026100%29
February 202683%30
March 202677%31
April 202676%41
May 202686%42
Departures on time
81%
Diverted
0%
Flights flown
422
Months covered
12

Keep nerding

Based on 424 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.