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Flight Reliability

WN 404 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 404 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

86%
Arrive within 15 minutes
0 min
Average arrival delay
1.6%
Cancelled
8 min early
Median arrival delay

Based on 382 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(50 flights)
  • Tue82%(54 flights)
  • Wed77%(53 flights)
  • Thu91%(53 flights)
  • Fri88%(59 flights)
  • Sat87%(46 flights)
  • Sun90%(61 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM96%(118 flights)
  • 9 AM–12 PM88%(119 flights)
  • 12–3 PM80%(69 flights)
  • 3–6 PM78%(45 flights)
  • 6–9 PM55%(20 flights)
On-time trend by month
68%
May

Jun 88% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%32
July 202577%30
August 202581%31
September 202583%30
October 202594%31
November 2025100%21
December 202565%17
January 202684%45
February 202696%49
March 202697%30
April 202693%29
May 202668%31
Departures on time
82%
Diverted
0%
Flights flown
376
Months covered
12

Keep nerding

Based on 382 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.