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Flight Reliability

WN 642 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 642 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
5 min early
Median arrival delay

Based on 411 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(61 flights)
  • Tue79%(61 flights)
  • Wed91%(55 flights)
  • Thu79%(52 flights)
  • Fri72%(61 flights)
  • Sat89%(47 flights)
  • Sun61%(74 flights)
On-time by departure window
  • 3–6 AM—(8 flights)
  • 6–9 AM91%(76 flights)
  • 9 AM–12 PM93%(82 flights)
  • 12–3 PM57%(37 flights)
  • 3–6 PM68%(108 flights)
  • 6–9 PM74%(38 flights)
  • 9 PM–12 AM69%(62 flights)
On-time trend by month
61%
May

Jun 77% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202577%30
August 202597%31
September 202597%30
October 202568%28
November 202571%35
December 202564%58
January 202686%36
February 202693%28
March 202681%31
April 202672%36
May 202661%38
Departures on time
70%
Diverted
0%
Flights flown
411
Months covered
12

Keep nerding

Based on 411 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.