Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 424 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 424 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

76%
Arrive within 15 minutes
8 min
Average arrival delay
1.4%
Cancelled
5 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(43 flights)
  • Tue89%(52 flights)
  • Wed88%(51 flights)
  • Thu77%(43 flights)
  • Fri67%(43 flights)
  • Sat82%(54 flights)
  • Sun50%(66 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM93%(54 flights)
  • 9 AM–12 PM80%(10 flights)
  • 12–3 PM76%(53 flights)
  • 3–6 PM82%(156 flights)
  • 6–9 PM38%(47 flights)
  • 9 PM–12 AM77%(31 flights)
On-time trend by month
65%
May

Jun 60% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%25
July 202565%26
August 202576%42
September 202570%43
October 202582%39
November 202592%26
December 202578%27
January 202697%29
February 202688%24
March 202661%31
April 202685%20
May 202665%20
Departures on time
73%
Diverted
0%
Flights flown
352
Months covered
12

Keep nerding

Based on 357 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.