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Flight Reliability

WN 4409 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4409 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
1 min
Average arrival delay
0.9%
Cancelled
8 min early
Median arrival delay

Based on 222 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(29 flights)
  • Tue96%(28 flights)
  • Wed85%(26 flights)
  • Thu83%(29 flights)
  • Fri85%(33 flights)
  • Sat89%(27 flights)
  • Sun77%(48 flights)
On-time by departure window
  • 6–9 AM92%(117 flights)
  • 9 AM–12 PM96%(23 flights)
  • 12–3 PM62%(13 flights)
  • 3–6 PM58%(26 flights)
  • 6–9 PM82%(28 flights)
  • 9 PM–12 AM92%(13 flights)
On-time trend by month
96%
May

Oct 53% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202553%32
November 202583%18
December 202587%15
January 202692%26
February 202693%27
March 202697%30
April 202696%27
May 202696%26
Departures on time
82%
Diverted
0%
Flights flown
220
Months covered
11

Keep nerding

Based on 222 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.