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Flight Reliability

WN 186 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 186 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

78%
Arrive within 15 minutes
8 min
Average arrival delay
1.2%
Cancelled
4 min early
Median arrival delay

Based on 433 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(64 flights)
  • Tue89%(44 flights)
  • Wed85%(46 flights)
  • Thu66%(68 flights)
  • Fri82%(65 flights)
  • Sat83%(77 flights)
  • Sun70%(63 flights)
On-time by departure window
  • 6–9 AM90%(31 flights)
  • 9 AM–12 PM91%(79 flights)
  • 12–3 PM82%(60 flights)
  • 3–6 PM72%(95 flights)
  • 6–9 PM71%(139 flights)
  • 9 PM–12 AM70%(23 flights)
On-time trend by month
68%
May

Jun 63% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%41
July 202565%43
August 202588%60
September 202584%63
October 202589%35
November 202595%43
December 202564%28
January 202675%12
February 202644%18
March 202679%42
April 202683%23
May 202668%19
Departures on time
72%
Diverted
0.2%
Flights flown
427
Months covered
12

Keep nerding

Based on 433 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.