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Flight Reliability

WN 827 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 827 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
9 min
Average arrival delay
0.8%
Cancelled
0 min
Median arrival delay

Based on 377 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(53 flights)
  • Tue79%(53 flights)
  • Wed76%(53 flights)
  • Thu76%(54 flights)
  • Fri75%(57 flights)
  • Sat85%(52 flights)
  • Sun49%(51 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM100%(25 flights)
  • 9 AM–12 PM83%(87 flights)
  • 12–3 PM64%(28 flights)
  • 3–6 PM60%(117 flights)
  • 6–9 PM83%(46 flights)
  • 9 PM–12 AM70%(69 flights)
On-time trend by month
74%
May

Jun 69% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%32
July 202558%31
August 202582%28
September 202596%26
October 202577%30
November 202550%42
December 202563%35
January 202687%30
February 202689%27
March 202677%31
April 202670%30
May 202674%31
Departures on time
68%
Diverted
0.3%
Flights flown
373
Months covered
12

Keep nerding

Based on 377 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.