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Flight Reliability

WN 3389 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3389 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

73%
Arrive within 15 minutes
10 min
Average arrival delay
1.6%
Cancelled
1 min early
Median arrival delay

Based on 432 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(56 flights)
  • Tue81%(69 flights)
  • Wed78%(71 flights)
  • Thu63%(59 flights)
  • Fri70%(59 flights)
  • Sat71%(49 flights)
  • Sun74%(62 flights)
On-time by departure window
  • 6–9 AM92%(90 flights)
  • 9 AM–12 PM77%(96 flights)
  • 12–3 PM52%(99 flights)
  • 3–6 PM82%(88 flights)
  • 6–9 PM79%(29 flights)
  • 9 PM–12 AM35%(23 flights)
On-time trend by month
44%
May

Jun 79% → May 44% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%38
July 202585%34
August 202580%39
September 202566%38
October 202581%32
November 202575%68
December 202579%48
January 202682%27
February 202681%26
April 202653%32
May 202644%39
Departures on time
68%
Diverted
0%
Flights flown
425
Months covered
12

Keep nerding

Based on 432 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.