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Flight Reliability

WN 3338 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3338 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

81%
Arrive within 15 minutes
6 min
Average arrival delay
0.3%
Cancelled
5 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(46 flights)
  • Tue90%(61 flights)
  • Wed80%(61 flights)
  • Thu76%(45 flights)
  • Fri87%(47 flights)
  • Sat73%(51 flights)
  • Sun79%(48 flights)
On-time by departure window
  • 3–6 AM93%(30 flights)
  • 6–9 AM92%(74 flights)
  • 9 AM–12 PM79%(34 flights)
  • 12–3 PM78%(98 flights)
  • 3–6 PM77%(73 flights)
  • 6–9 PM67%(42 flights)
  • 9 PM–12 AM—(8 flights)
On-time trend by month
93%
May

Jun 93% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%14
July 202557%14
August 202585%34
September 202587%39
October 202575%32
November 202583%41
December 202586%35
January 202680%35
February 202669%29
March 202656%27
April 202693%29
May 202693%30
Departures on time
79%
Diverted
0.3%
Flights flown
359
Months covered
12

Keep nerding

Based on 361 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.