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Flight Reliability

WN 3339 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3339 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

70%
Arrive within 15 minutes
16 min
Average arrival delay
2.4%
Cancelled
1 min
Median arrival delay

Based on 424 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(70 flights)
  • Tue77%(52 flights)
  • Wed83%(54 flights)
  • Thu60%(68 flights)
  • Fri63%(67 flights)
  • Sat84%(44 flights)
  • Sun65%(57 flights)
On-time by departure window
  • 3–6 AM94%(32 flights)
  • 6–9 AM77%(22 flights)
  • 9 AM–12 PM88%(68 flights)
  • 12–3 PM64%(89 flights)
  • 3–6 PM69%(127 flights)
  • 6–9 PM51%(63 flights)
  • 9 PM–12 AM46%(11 flights)
On-time trend by month
94%
Mar

Jun 66% → Mar 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%68
July 202561%72
August 202569%45
September 202577%39
October 202550%10
November 202554%35
December 202563%24
January 202687%37
February 202671%38
March 202694%31
Departures on time
68%
Diverted
0.5%
Flights flown
412
Months covered
12

Keep nerding

Based on 424 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.