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WanderNerd

Flight Reliability

WN 3126 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3126 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

74%
Arrive within 15 minutes
12 min
Average arrival delay
2.4%
Cancelled
1 min early
Median arrival delay

Based on 247 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon62%(37 flights)
  • Tue78%(32 flights)
  • Wed88%(33 flights)
  • Thu74%(39 flights)
  • Fri65%(34 flights)
  • Sat92%(25 flights)
  • Sun66%(41 flights)
On-time by departure window
  • 6–9 AM97%(57 flights)
  • 9 AM–12 PM81%(16 flights)
  • 12–3 PM72%(36 flights)
  • 3–6 PM65%(52 flights)
  • 6–9 PM64%(50 flights)
  • 9 PM–12 AM60%(30 flights)
On-time trend by month
74%
Mar

Jun 72% → Mar 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%25
July 202556%25
August 202564%11
October 202561%61
November 202591%11
December 202564%14
January 2026100%24
February 202695%21
March 202674%34
Departures on time
65%
Diverted
0%
Flights flown
241
Months covered
11

Based on 247 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.