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Flight Reliability

WN 937 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 937 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

59%
Arrive within 15 minutes
22 min
Average arrival delay
1.1%
Cancelled
7 min
Median arrival delay

Based on 360 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon49%(59 flights)
  • Tue75%(57 flights)
  • Wed66%(55 flights)
  • Thu43%(60 flights)
  • Fri48%(60 flights)
  • Sat71%(31 flights)
  • Sun70%(33 flights)
On-time by departure window
  • 3–6 AM—(3 flights)
  • 6–9 AM79%(19 flights)
  • 9 AM–12 PM71%(24 flights)
  • 12–3 PM69%(94 flights)
  • 3–6 PM47%(74 flights)
  • 6–9 PM51%(118 flights)
  • 9 PM–12 AM57%(23 flights)
On-time trend by month
46%
May

Jun 43% → May 46% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%40
July 202540%43
August 202555%29
September 202560%30
October 202551%51
November 202595%19
December 202547%15
January 202692%25
February 202659%27
March 202671%31
April 202678%23
May 202646%22
Departures on time
53%
Diverted
0.3%
Flights flown
355
Months covered
12

Keep nerding

Based on 360 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.