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Flight Reliability

WN 3934 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3934 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

81%
Arrive within 15 minutes
4 min
Average arrival delay
1.4%
Cancelled
5 min early
Median arrival delay

Based on 292 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(43 flights)
  • Tue82%(39 flights)
  • Wed83%(40 flights)
  • Thu79%(43 flights)
  • Fri75%(44 flights)
  • Sat71%(31 flights)
  • Sun92%(48 flights)
On-time by departure window
  • 3–6 AM—(7 flights)
  • 6–9 AM91%(126 flights)
  • 9 AM–12 PM89%(27 flights)
  • 12–3 PM—(8 flights)
  • 3–6 PM72%(54 flights)
  • 6–9 PM64%(63 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
50%
May

Jun 79% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%34
July 202571%31
August 202590%30
September 202580%30
October 202587%15
November 2025100%27
December 202594%31
March 202684%25
April 202677%30
May 202650%30
Departures on time
80%
Diverted
0%
Flights flown
288
Months covered
11

Keep nerding

Based on 292 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.