Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1389 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1389 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
7 min
Average arrival delay
0.9%
Cancelled
6 min early
Median arrival delay

Based on 342 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(60 flights)
  • Tue94%(35 flights)
  • Wed89%(36 flights)
  • Thu73%(59 flights)
  • Fri80%(59 flights)
  • Sat78%(41 flights)
  • Sun65%(48 flights)
On-time by departure window
  • 6–9 AM89%(85 flights)
  • 9 AM–12 PM81%(78 flights)
  • 12–3 PM74%(53 flights)
  • 3–6 PM67%(46 flights)
  • 6–9 PM68%(68 flights)
  • 9 PM–12 AM—(8 flights)
On-time trend by month
71%
May

Jun 59% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%34
July 202572%32
August 202588%32
September 202583%30
October 202578%27
November 202590%30
December 202587%30
January 202684%31
February 202696%25
March 202648%31
April 202679%19
May 202671%17
Departures on time
72%
Diverted
0.3%
Flights flown
338
Months covered
12

Keep nerding

Based on 342 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.