Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1576 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1576 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

78%
Arrive within 15 minutes
3 min
Average arrival delay
0.9%
Cancelled
7 min early
Median arrival delay

Based on 335 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(48 flights)
  • Tue87%(38 flights)
  • Wed75%(36 flights)
  • Thu83%(46 flights)
  • Fri72%(50 flights)
  • Sat69%(36 flights)
  • Sun78%(78 flights)
On-time by departure window
  • 3–6 AM100%(18 flights)
  • 6–9 AM100%(27 flights)
  • 9 AM–12 PM91%(44 flights)
  • 12–3 PM66%(79 flights)
  • 3–6 PM75%(24 flights)
  • 6–9 PM74%(125 flights)
  • 9 PM–12 AM73%(15 flights)
On-time trend by month
62%
May

Jun 81% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%21
July 202581%16
August 202578%36
September 202590%38
October 2025100%31
November 202590%19
December 202554%13
January 202679%24
February 202679%24
March 202671%34
April 202670%37
May 202662%39
Departures on time
77%
Diverted
0%
Flights flown
332
Months covered
12

Keep nerding

Based on 335 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.