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Flight Reliability

WN 819 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 819 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

72%
Arrive within 15 minutes
16 min
Average arrival delay
0.9%
Cancelled
1 min early
Median arrival delay

Based on 342 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(48 flights)
  • Tue76%(55 flights)
  • Wed81%(53 flights)
  • Thu72%(47 flights)
  • Fri72%(50 flights)
  • Sat68%(44 flights)
  • Sun63%(41 flights)
On-time by departure window
  • 3–6 AM91%(21 flights)
  • 6–9 AM89%(28 flights)
  • 9 AM–12 PM89%(28 flights)
  • 12–3 PM72%(54 flights)
  • 3–6 PM66%(68 flights)
  • 6–9 PM64%(126 flights)
  • 9 PM–12 AM69%(13 flights)
On-time trend by month
65%
May

Jun 48% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%31
July 202540%30
August 202572%39
September 202576%38
October 202588%32
November 202574%19
December 202573%15
January 202673%30
February 202684%25
March 202685%27
April 202689%26
May 202665%26
Departures on time
66%
Diverted
0.3%
Flights flown
338
Months covered
12

Keep nerding

Based on 342 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.