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Flight Reliability

WN 153 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 153 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

89%
Arrive within 15 minutes
1 min early
Average arrival delay
0.5%
Cancelled
8 min early
Median arrival delay

Based on 382 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(60 flights)
  • Tue87%(52 flights)
  • Wed94%(52 flights)
  • Thu95%(61 flights)
  • Fri83%(60 flights)
  • Sat85%(46 flights)
  • Sun88%(48 flights)
On-time by departure window
  • 3–6 AM95%(37 flights)
  • 6–9 AM93%(187 flights)
  • 9 AM–12 PM82%(55 flights)
  • 12–3 PM89%(71 flights)
  • 3–6 PM56%(18 flights)
  • 6–9 PM90%(10 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
91%
May

Jun 87% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%38
July 202597%38
August 202583%29
September 202589%26
October 202584%31
November 202587%30
December 202584%31
January 202676%33
February 2026100%29
March 202697%31
April 202693%30
May 202691%33
Departures on time
89%
Diverted
0.3%
Flights flown
379
Months covered
12

Keep nerding

Based on 382 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.