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Flight Reliability

WN 1209 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1209 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

76%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
2 min early
Median arrival delay

Based on 380 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(55 flights)
  • Tue79%(66 flights)
  • Wed72%(64 flights)
  • Thu71%(55 flights)
  • Fri75%(57 flights)
  • Sat81%(26 flights)
  • Sun76%(54 flights)
On-time by departure window
  • 3–6 AM89%(35 flights)
  • 6–9 AM93%(57 flights)
  • 9 AM–12 PM74%(27 flights)
  • 12–3 PM82%(78 flights)
  • 3–6 PM69%(122 flights)
  • 6–9 PM58%(24 flights)
  • 9 PM–12 AM65%(34 flights)
On-time trend by month
82%
May

Jun 79% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%38
July 202559%46
August 202557%35
September 202571%38
October 202571%31
November 202595%19
December 202587%15
January 202690%30
February 202679%28
March 202688%34
April 202683%30
May 202682%33
Departures on time
76%
Diverted
0%
Flights flown
377
Months covered
12

Keep nerding

Based on 380 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.