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Flight Reliability

WN 1523 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1523 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

73%
Arrive within 15 minutes
10 min
Average arrival delay
0.5%
Cancelled
1 min
Median arrival delay

Based on 392 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(59 flights)
  • Tue78%(51 flights)
  • Wed74%(50 flights)
  • Thu70%(59 flights)
  • Fri75%(60 flights)
  • Sat64%(52 flights)
  • Sun66%(59 flights)
On-time by departure window
  • 3–6 AM90%(19 flights)
  • 6–9 AM86%(152 flights)
  • 9 AM–12 PM68%(60 flights)
  • 12–3 PM68%(50 flights)
  • 3–6 PM65%(65 flights)
  • 6–9 PM—(1 flights)
  • 9 PM–12 AM40%(43 flights)
On-time trend by month
97%
May

Jun 54% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202554%28
July 202552%31
August 202574%43
September 202579%47
October 202574%31
November 202571%28
December 202574%31
January 202687%31
February 202682%28
March 202636%31
April 202687%30
May 202697%31
Departures on time
74%
Diverted
0%
Flights flown
390
Months covered
12

Keep nerding

Based on 392 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.