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Flight Reliability

WN 409 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 409 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
6 min
Average arrival delay
1.2%
Cancelled
3 min early
Median arrival delay

Based on 327 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(40 flights)
  • Tue85%(53 flights)
  • Wed79%(52 flights)
  • Thu90%(40 flights)
  • Fri83%(41 flights)
  • Sat88%(43 flights)
  • Sun72%(53 flights)
On-time by departure window
  • 6–9 AM93%(101 flights)
  • 9 AM–12 PM89%(64 flights)
  • 12–3 PM83%(46 flights)
  • 3–6 PM60%(57 flights)
  • 6–9 PM82%(22 flights)
  • 9 PM–12 AM69%(32 flights)
On-time trend by month
96%
May

Jun 68% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%31
July 202571%28
August 202594%32
September 202590%30
October 202584%32
November 202587%31
December 202586%29
January 202680%10
February 202661%18
March 202661%28
April 202693%27
May 202696%26
Departures on time
80%
Diverted
0.3%
Flights flown
322
Months covered
12

Keep nerding

Based on 327 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.