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Flight Reliability

WN 2123 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2123 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

79%
Arrive within 15 minutes
6 min
Average arrival delay
2.5%
Cancelled
5 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(53 flights)
  • Tue80%(55 flights)
  • Wed83%(52 flights)
  • Thu77%(48 flights)
  • Fri82%(55 flights)
  • Sat85%(26 flights)
  • Sun71%(62 flights)
On-time by departure window
  • 3–6 AM94%(31 flights)
  • 6–9 AM95%(74 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM93%(28 flights)
  • 3–6 PM67%(140 flights)
  • 6–9 PM74%(58 flights)
  • 9 PM–12 AM69%(13 flights)
On-time trend by month
87%
May

Jun 67% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202550%26
August 202569%29
September 202583%30
October 202567%18
November 202583%18
December 202560%25
January 202683%46
February 202692%37
March 202687%31
April 2026100%30
May 202687%31
Departures on time
73%
Diverted
0.6%
Flights flown
351
Months covered
12

Keep nerding

Based on 362 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.