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Flight Reliability

WN 425 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 425 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

82%
Arrive within 15 minutes
5 min
Average arrival delay
0.9%
Cancelled
3 min early
Median arrival delay

Based on 443 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(59 flights)
  • Tue79%(70 flights)
  • Wed87%(69 flights)
  • Thu81%(58 flights)
  • Fri77%(56 flights)
  • Sat91%(68 flights)
  • Sun76%(58 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM94%(102 flights)
  • 9 AM–12 PM92%(108 flights)
  • 12–3 PM74%(124 flights)
  • 3–6 PM69%(102 flights)
On-time trend by month
74%
May

Jun 87% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202571%31
August 202590%31
September 202597%30
October 202594%35
November 202555%29
December 202571%28
January 202686%59
February 202693%67
March 202696%24
April 202657%35
May 202674%39
Departures on time
77%
Diverted
0.2%
Flights flown
438
Months covered
12

Keep nerding

Based on 443 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.