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Flight Reliability

WN 3906 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3906 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

91%
Arrive within 15 minutes
5 min early
Average arrival delay
1.3%
Cancelled
9 min early
Median arrival delay

Based on 237 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon93%(29 flights)
  • Tue95%(37 flights)
  • Wed78%(37 flights)
  • Thu100%(27 flights)
  • Fri97%(29 flights)
  • Sat87%(38 flights)
  • Sun89%(37 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM96%(56 flights)
  • 9 AM–12 PM95%(125 flights)
  • 12–3 PM70%(10 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM67%(12 flights)
  • 9 PM–12 AM69%(16 flights)
On-time trend by month
83%
Apr

Jun 80% → Apr 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%15
July 202550%10
August 202596%27
September 202593%30
October 2025100%30
November 202593%27
December 202594%31
February 202680%10
March 202696%28
April 202683%12
Departures on time
86%
Diverted
0%
Flights flown
234
Months covered
12

Keep nerding

Based on 237 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.