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Flight Reliability

WN 3786 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3786 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

67%
Arrive within 15 minutes
14 min
Average arrival delay
0.4%
Cancelled
4 min
Median arrival delay

Based on 270 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(34 flights)
  • Tue75%(36 flights)
  • Wed74%(34 flights)
  • Thu74%(31 flights)
  • Fri69%(35 flights)
  • Sat90%(38 flights)
  • Sun38%(60 flights)
On-time by departure window
  • 6–9 AM80%(76 flights)
  • 9 AM–12 PM85%(26 flights)
  • 12–3 PM87%(23 flights)
  • 3–6 PM45%(69 flights)
  • 6–9 PM61%(74 flights)
On-time trend by month
42%
May

Jun 68% → May 42% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%40
July 202557%44
October 202577%22
December 2025100%13
February 202682%17
March 202680%39
April 202666%32
May 202642%31
Departures on time
67%
Diverted
0.4%
Flights flown
268
Months covered
12

Keep nerding

Based on 270 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.