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WanderNerd

Flight Reliability

WN 2423 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2423 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

79%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
7 min early
Median arrival delay

Based on 311 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(45 flights)
  • Tue80%(45 flights)
  • Wed75%(47 flights)
  • Thu80%(49 flights)
  • Fri85%(47 flights)
  • Sat87%(39 flights)
  • Sun63%(38 flights)
On-time by departure window
  • 3–6 AM93%(42 flights)
  • 6–9 AM84%(120 flights)
  • 9 AM–12 PM77%(68 flights)
  • 12–3 PM89%(18 flights)
  • 3–6 PM75%(12 flights)
  • 6–9 PM41%(17 flights)
  • 9 PM–12 AM64%(33 flights)
On-time trend by month
45%
May

Jun 81% → May 45% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%26
July 202589%27
August 202589%37
September 202597%39
October 202547%19
November 202597%38
December 202579%24
March 202668%28
April 202667%30
May 202645%31
Departures on time
77%
Diverted
0%
Flights flown
310
Months covered
12

Based on 311 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.