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Flight Reliability

WN 3986 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3986 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

72%
Arrive within 15 minutes
12 min
Average arrival delay
2.3%
Cancelled
0 min
Median arrival delay

Based on 219 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(31 flights)
  • Tue61%(23 flights)
  • Wed80%(20 flights)
  • Thu72%(29 flights)
  • Fri77%(31 flights)
  • Sat84%(19 flights)
  • Sun71%(61 flights)
On-time by departure window
  • 9 AM–12 PM57%(35 flights)
  • 12–3 PM86%(69 flights)
  • 3–6 PM87%(38 flights)
  • 6–9 PM58%(72 flights)
On-time trend by month
93%
May

Jun 57% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%35
July 202542%38
October 202586%22
November 202567%15
December 202560%15
March 202676%21
April 2026100%28
May 202693%30
Departures on time
62%
Diverted
0%
Flights flown
214
Months covered
10

Keep nerding

Based on 219 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.