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Flight Reliability

WN 1091 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1091 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

63%
Arrive within 15 minutes
16 min
Average arrival delay
1.1%
Cancelled
7 min
Median arrival delay

Based on 468 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon53%(74 flights)
  • Tue73%(56 flights)
  • Wed60%(53 flights)
  • Thu69%(74 flights)
  • Fri52%(82 flights)
  • Sat74%(58 flights)
  • Sun63%(64 flights)
On-time by departure window
  • 6–9 AM94%(34 flights)
  • 9 AM–12 PM86%(14 flights)
  • 12–3 PM68%(163 flights)
  • 3–6 PM53%(175 flights)
  • 6–9 PM56%(75 flights)
On-time trend by month
54%
May

Jun 46% → May 54% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%35
July 202536%33
August 202587%31
September 202583%30
October 202564%39
November 202571%35
December 202572%25
January 202658%33
February 202669%39
March 202650%32
April 202670%60
May 202654%69
Departures on time
60%
Diverted
0.4%
Flights flown
461
Months covered
12

Keep nerding

Based on 468 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.