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Flight Reliability

WN 542 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 542 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
0.5%
Cancelled
2 min early
Median arrival delay

Based on 379 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(51 flights)
  • Tue89%(56 flights)
  • Wed86%(56 flights)
  • Thu65%(52 flights)
  • Fri71%(51 flights)
  • Sat77%(44 flights)
  • Sun73%(67 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM87%(63 flights)
  • 9 AM–12 PM81%(108 flights)
  • 12–3 PM83%(69 flights)
  • 3–6 PM70%(56 flights)
  • 6–9 PM63%(72 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
36%
May

Jun 87% → May 36% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202583%30
August 202572%29
September 202580%30
October 202590%51
November 202584%32
December 202578%32
January 202678%32
February 202679%28
March 202674%38
April 202657%23
May 202636%22
Departures on time
68%
Diverted
0%
Flights flown
377
Months covered
12

Keep nerding

Based on 379 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.