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Flight Reliability

WN 1823 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1823 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
13 min
Average arrival delay
0.9%
Cancelled
0 min
Median arrival delay

Based on 424 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(75 flights)
  • Tue79%(42 flights)
  • Wed74%(42 flights)
  • Thu61%(74 flights)
  • Fri68%(75 flights)
  • Sat85%(59 flights)
  • Sun75%(51 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM92%(124 flights)
  • 9 AM–12 PM81%(48 flights)
  • 12–3 PM85%(34 flights)
  • 3–6 PM57%(90 flights)
  • 6–9 PM63%(54 flights)
  • 9 PM–12 AM56%(63 flights)
On-time trend by month
100%
May

Jun 57% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%53
July 202545%53
August 202577%31
September 202585%26
October 202581%26
November 202568%40
December 202579%34
January 202688%32
February 202687%15
March 202668%37
April 202683%35
May 2026100%36
Departures on time
67%
Diverted
0.5%
Flights flown
418
Months covered
12

Keep nerding

Based on 424 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.