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Flight Reliability

WN 804 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 804 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

77%
Arrive within 15 minutes
8 min
Average arrival delay
0.8%
Cancelled
4 min early
Median arrival delay

Based on 377 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(52 flights)
  • Tue76%(59 flights)
  • Wed77%(60 flights)
  • Thu81%(52 flights)
  • Fri80%(49 flights)
  • Sat68%(44 flights)
  • Sun76%(58 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM94%(93 flights)
  • 9 AM–12 PM93%(15 flights)
  • 12–3 PM100%(29 flights)
  • 3–6 PM69%(133 flights)
  • 6–9 PM56%(77 flights)
  • 9 PM–12 AM77%(26 flights)
On-time trend by month
92%
May

Jun 63% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%35
July 202565%40
August 202558%33
September 202574%34
October 202568%31
November 202575%32
December 202571%31
January 202689%28
February 202689%27
March 202694%31
April 202696%27
May 202692%25
Departures on time
71%
Diverted
0%
Flights flown
374
Months covered
12

Keep nerding

Based on 377 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.