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WanderNerd

Flight Reliability

WN 3443 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3443 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

69%
Arrive within 15 minutes
13 min
Average arrival delay
1.0%
Cancelled
0 min
Median arrival delay

Based on 293 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(41 flights)
  • Tue67%(51 flights)
  • Wed77%(51 flights)
  • Thu72%(36 flights)
  • Fri57%(35 flights)
  • Sat68%(40 flights)
  • Sun74%(34 flights)
On-time by departure window
  • 6–9 AM100%(42 flights)
  • 9 AM–12 PM61%(57 flights)
  • 12–3 PM82%(49 flights)
  • 3–6 PM64%(67 flights)
  • 6–9 PM51%(65 flights)
  • 9 PM–12 AM(8 flights)
On-time trend by month
69%
Apr

Jun 61% → Apr 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%33
July 202553%40
August 202587%31
September 202587%30
November 202573%26
December 202567%49
March 202660%48
April 202669%13
Departures on time
64%
Diverted
0.7%
Flights flown
288
Months covered
11

Based on 293 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.