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Flight Reliability

WN 2129 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2129 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

72%
Arrive within 15 minutes
10 min
Average arrival delay
0.9%
Cancelled
3 min early
Median arrival delay

Based on 331 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon62%(55 flights)
  • Tue83%(42 flights)
  • Wed85%(39 flights)
  • Thu65%(54 flights)
  • Fri71%(58 flights)
  • Sat87%(30 flights)
  • Sun65%(49 flights)
On-time by departure window
  • 3–6 AM94%(36 flights)
  • 6–9 AM91%(78 flights)
  • 12–3 PM73%(26 flights)
  • 3–6 PM57%(97 flights)
  • 6–9 PM64%(89 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
61%
May

Jun 83% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%24
July 2025100%21
August 202572%25
September 202577%26
October 202590%39
November 2025100%16
December 202569%13
January 202676%25
February 202644%25
March 202655%29
April 202660%40
May 202661%44
Departures on time
71%
Diverted
0.3%
Flights flown
327
Months covered
12

Keep nerding

Based on 331 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.