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Flight Reliability

WN 3401 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3401 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

82%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
4 min early
Median arrival delay

Based on 356 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(53 flights)
  • Tue84%(44 flights)
  • Wed72%(43 flights)
  • Thu84%(51 flights)
  • Fri73%(51 flights)
  • Sat94%(46 flights)
  • Sun80%(65 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM91%(107 flights)
  • 9 AM–12 PM84%(69 flights)
  • 12–3 PM87%(47 flights)
  • 3–6 PM76%(80 flights)
  • 6–9 PM59%(41 flights)
On-time trend by month
90%
Mar

Jun 83% → Mar 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202570%30
August 202575%55
September 202581%58
October 202594%31
November 202579%29
December 202587%31
January 202674%27
February 202692%26
March 202690%30
Departures on time
74%
Diverted
0.6%
Flights flown
353
Months covered
11

Keep nerding

Based on 356 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.