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WanderNerd

Flight Reliability

WN 816 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 816 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

82%
Arrive within 15 minutes
4 min
Average arrival delay
0.7%
Cancelled
4 min early
Median arrival delay

Based on 407 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(59 flights)
  • Tue88%(59 flights)
  • Wed86%(56 flights)
  • Thu90%(58 flights)
  • Fri75%(65 flights)
  • Sat92%(37 flights)
  • Sun69%(68 flights)
On-time by departure window
  • 3–6 AM84%(31 flights)
  • 6–9 AM85%(108 flights)
  • 9 AM–12 PM85%(150 flights)
  • 12–3 PM77%(74 flights)
  • 3–6 PM64%(22 flights)
  • 6–9 PM77%(17 flights)
On-time trend by month
71%
May

Jun 89% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%36
July 202588%41
August 202586%22
September 202586%22
October 202577%39
November 202580%54
December 202564%45
January 202694%34
February 202692%25
March 202675%24
April 202690%29
May 202671%31
Departures on time
78%
Diverted
0.5%
Flights flown
402
Months covered
12

Based on 407 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.