Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 429 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 429 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

85%
Arrive within 15 minutes
2 min
Average arrival delay
0.8%
Cancelled
6 min early
Median arrival delay

Based on 371 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(53 flights)
  • Tue72%(47 flights)
  • Wed84%(44 flights)
  • Thu94%(52 flights)
  • Fri89%(56 flights)
  • Sat83%(46 flights)
  • Sun87%(68 flights)
On-time by departure window
  • 3–6 AM96%(24 flights)
  • 6–9 AM99%(71 flights)
  • 9 AM–12 PM86%(69 flights)
  • 12–3 PM81%(75 flights)
  • 3–6 PM67%(51 flights)
  • 6–9 PM56%(16 flights)
  • 9 PM–12 AM90%(60 flights)
On-time trend by month
90%
May

Jun 87% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202574%31
August 202574%31
September 202593%30
October 202597%31
November 202580%45
December 202568%47
January 202693%15
February 202682%17
March 202693%29
April 2026100%29
May 202690%31
Departures on time
83%
Diverted
0.5%
Flights flown
366
Months covered
12

Keep nerding

Based on 371 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.