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Flight Reliability

WN 1142 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1142 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

71%
Arrive within 15 minutes
12 min
Average arrival delay
2.4%
Cancelled
3 min early
Median arrival delay

Based on 422 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(69 flights)
  • Tue86%(44 flights)
  • Wed89%(44 flights)
  • Thu55%(69 flights)
  • Fri62%(65 flights)
  • Sat80%(55 flights)
  • Sun69%(62 flights)
On-time by departure window
  • 3–6 AM100%(36 flights)
  • 6–9 AM97%(57 flights)
  • 9 AM–12 PM89%(75 flights)
  • 12–3 PM63%(91 flights)
  • 3–6 PM52%(77 flights)
  • 6–9 PM40%(25 flights)
  • 9 PM–12 AM49%(47 flights)
On-time trend by month
72%
May

Jun 50% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%42
July 202557%44
August 202591%23
September 2025100%16
October 202579%14
November 202574%50
December 202571%48
January 202688%32
February 202689%28
March 202659%65
April 202668%28
May 202672%18
Departures on time
66%
Diverted
0.9%
Flights flown
408
Months covered
12

Keep nerding

Based on 422 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.