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Flight Reliability

WN 3799 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3799 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

78%
Arrive within 15 minutes
3 min
Average arrival delay
0.4%
Cancelled
5 min early
Median arrival delay

Based on 448 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(61 flights)
  • Tue86%(64 flights)
  • Wed78%(64 flights)
  • Thu80%(61 flights)
  • Fri83%(60 flights)
  • Sat77%(51 flights)
  • Sun68%(83 flights)
On-time by departure window
  • 6–9 AM99%(80 flights)
  • 9 AM–12 PM88%(40 flights)
  • 12–3 PM82%(83 flights)
  • 3–6 PM67%(94 flights)
  • 6–9 PM71%(132 flights)
  • 9 PM–12 AM60%(15 flights)
On-time trend by month
75%
May

Jun 74% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%35
July 202563%32
August 202589%35
September 202591%34
October 202561%31
November 202561%44
December 202578%37
January 202687%37
February 202680%35
April 202693%53
May 202675%64
Departures on time
73%
Diverted
0.4%
Flights flown
444
Months covered
12

Keep nerding

Based on 448 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.