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Flight Reliability

WN 1133 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1133 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

70%
Arrive within 15 minutes
8 min
Average arrival delay
0.5%
Cancelled
1 min
Median arrival delay

Based on 389 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon55%(60 flights)
  • Tue82%(51 flights)
  • Wed88%(50 flights)
  • Thu70%(59 flights)
  • Fri66%(61 flights)
  • Sat68%(44 flights)
  • Sun68%(62 flights)
On-time by departure window
  • 6–9 AM87%(30 flights)
  • 9 AM–12 PM65%(54 flights)
  • 12–3 PM79%(70 flights)
  • 3–6 PM69%(111 flights)
  • 6–9 PM64%(118 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
74%
May

Jun 77% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%35
July 202571%31
August 202559%27
September 202565%26
October 202563%27
November 202576%42
December 202574%31
January 202671%38
February 202671%44
March 202665%26
April 202669%29
May 202674%31
Departures on time
65%
Diverted
0%
Flights flown
387
Months covered
12

Keep nerding

Based on 389 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.