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Flight Reliability

WN 1727 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1727 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

75%
Arrive within 15 minutes
9 min
Average arrival delay
0.6%
Cancelled
3 min early
Median arrival delay

Based on 477 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(71 flights)
  • Tue84%(70 flights)
  • Wed80%(70 flights)
  • Thu73%(74 flights)
  • Fri70%(74 flights)
  • Sat82%(50 flights)
  • Sun57%(65 flights)
On-time by departure window
  • 6–9 AM95%(85 flights)
  • 9 AM–12 PM79%(149 flights)
  • 12–3 PM74%(80 flights)
  • 3–6 PM66%(47 flights)
  • 6–9 PM59%(98 flights)
  • 9 PM–12 AM47%(15 flights)
On-time trend by month
43%
May

Jun 68% → May 43% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%31
July 202583%30
August 202580%39
September 202590%39
October 202575%59
November 202581%53
December 202578%60
January 202674%34
February 202668%41
March 202691%22
April 202665%31
May 202643%35
Departures on time
72%
Diverted
0%
Flights flown
474
Months covered
12

Keep nerding

Based on 477 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.