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Flight Reliability

WN 4430 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4430 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

84%
Arrive within 15 minutes
2 min
Average arrival delay
0.9%
Cancelled
6 min early
Median arrival delay

Based on 226 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(30 flights)
  • Tue89%(26 flights)
  • Wed96%(26 flights)
  • Thu85%(33 flights)
  • Fri81%(32 flights)
  • Sat75%(44 flights)
  • Sun91%(32 flights)
On-time by departure window
  • 3–6 AM100%(23 flights)
  • 6–9 AM100%(54 flights)
  • 9 AM–12 PM97%(32 flights)
  • 12–3 PM66%(53 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM73%(55 flights)
On-time trend by month
100%
May

Aug 73% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202573%26
September 202587%30
October 202594%62
January 2026100%10
February 202695%19
March 202656%27
April 202677%17
May 2026100%13
Departures on time
80%
Diverted
0.4%
Flights flown
223
Months covered
12

Keep nerding

Based on 226 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.