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Flight Reliability

WN 1397 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1397 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

84%
Arrive within 15 minutes
4 min
Average arrival delay
0.8%
Cancelled
7 min early
Median arrival delay

Based on 374 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(49 flights)
  • Tue78%(58 flights)
  • Wed76%(58 flights)
  • Thu87%(52 flights)
  • Fri88%(50 flights)
  • Sat89%(46 flights)
  • Sun90%(57 flights)
On-time by departure window
  • 6–9 AM94%(177 flights)
  • 9 AM–12 PM71%(21 flights)
  • 12–3 PM84%(109 flights)
  • 3–6 PM62%(39 flights)
  • 6–9 PM50%(24 flights)
On-time trend by month
86%
May

Jun 65% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%43
July 202585%52
August 202597%31
September 2025100%30
October 202591%35
November 202575%28
December 202573%22
January 202686%28
February 202682%27
March 202673%30
April 2026100%22
May 202686%22
Departures on time
82%
Diverted
0.3%
Flights flown
370
Months covered
12

Keep nerding

Based on 374 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.