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Flight Reliability

WN 3388 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3388 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

79%
Arrive within 15 minutes
5 min
Average arrival delay
0.3%
Cancelled
2 min early
Median arrival delay

Based on 298 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(37 flights)
  • Tue84%(45 flights)
  • Wed93%(44 flights)
  • Thu92%(37 flights)
  • Fri76%(38 flights)
  • Sat71%(42 flights)
  • Sun66%(53 flights)
On-time by departure window
  • 3–6 AM100%(16 flights)
  • 6–9 AM98%(55 flights)
  • 9 AM–12 PM81%(94 flights)
  • 12–3 PM70%(33 flights)
  • 3–6 PM71%(83 flights)
  • 6–9 PM36%(14 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
81%
May

Aug 96% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202596%28
September 202593%30
October 202572%39
November 202597%30
December 202573%33
January 202687%31
February 202654%28
April 202672%25
May 202681%31
Departures on time
77%
Diverted
0.3%
Flights flown
296
Months covered
12

Keep nerding

Based on 298 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.