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Flight Reliability

WN 958 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 958 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

66%
Arrive within 15 minutes
20 min
Average arrival delay
1.1%
Cancelled
3 min
Median arrival delay

Based on 371 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(53 flights)
  • Tue67%(48 flights)
  • Wed59%(46 flights)
  • Thu55%(55 flights)
  • Fri62%(58 flights)
  • Sat77%(53 flights)
  • Sun75%(52 flights)
On-time by departure window
  • 3–6 AM—(8 flights)
  • 6–9 AM96%(46 flights)
  • 9 AM–12 PM75%(52 flights)
  • 12–3 PM62%(29 flights)
  • 3–6 PM62%(161 flights)
  • 6–9 PM46%(69 flights)
On-time trend by month
42%
May

Jun 41% → May 42% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%46
July 202558%48
August 202597%33
September 202593%30
October 202585%27
November 202583%18
December 202567%15
January 202680%30
February 202638%42
March 202661%18
April 202674%27
May 202642%31
Departures on time
64%
Diverted
0.5%
Flights flown
365
Months covered
12

Keep nerding

Based on 371 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.