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Flight Reliability

WN 2143 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2143 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

77%
Arrive within 15 minutes
8 min
Average arrival delay
0%
Cancelled
3 min early
Median arrival delay

Based on 339 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(55 flights)
  • Tue82%(49 flights)
  • Wed87%(46 flights)
  • Thu82%(49 flights)
  • Fri66%(56 flights)
  • Sat86%(42 flights)
  • Sun68%(41 flights)
On-time by departure window
  • 3–6 AM91%(32 flights)
  • 6–9 AM96%(53 flights)
  • 9 AM–12 PM90%(60 flights)
  • 12–3 PM83%(18 flights)
  • 3–6 PM76%(70 flights)
  • 6–9 PM54%(90 flights)
  • 9 PM–12 AM67%(15 flights)
On-time trend by month
63%
May

Jun 87% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202597%31
August 202585%27
September 202592%26
November 202558%33
December 202571%49
January 202683%30
February 2026100%20
March 202670%27
April 202667%30
May 202663%30
Departures on time
71%
Diverted
0.3%
Flights flown
338
Months covered
12

Keep nerding

Based on 339 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.