Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 571 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 571 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

76%
Arrive within 15 minutes
8 min
Average arrival delay
0.3%
Cancelled
1 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(57 flights)
  • Tue79%(42 flights)
  • Wed86%(42 flights)
  • Thu72%(57 flights)
  • Fri78%(58 flights)
  • Sat76%(50 flights)
  • Sun65%(57 flights)
On-time by departure window
  • 3–6 AM100%(13 flights)
  • 6–9 AM97%(32 flights)
  • 9 AM–12 PM91%(21 flights)
  • 12–3 PM59%(27 flights)
  • 3–6 PM82%(110 flights)
  • 6–9 PM66%(135 flights)
  • 9 PM–12 AM76%(25 flights)
On-time trend by month
50%
May

Jun 81% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%16
July 202569%13
August 202576%29
September 202590%30
October 202584%31
November 202571%52
December 202578%50
January 202687%15
February 202671%28
March 202693%30
April 202676%33
May 202650%36
Departures on time
68%
Diverted
0%
Flights flown
363
Months covered
12

Keep nerding

Based on 364 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.