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Flight Reliability

WN 527 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 527 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

87%
Arrive within 15 minutes
3 min
Average arrival delay
0.9%
Cancelled
5 min early
Median arrival delay

Based on 317 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(44 flights)
  • Tue91%(44 flights)
  • Wed96%(44 flights)
  • Thu82%(44 flights)
  • Fri84%(44 flights)
  • Sat91%(44 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 6–9 AM95%(136 flights)
  • 9 AM–12 PM86%(88 flights)
  • 12–3 PM—(8 flights)
  • 3–6 PM72%(25 flights)
  • 6–9 PM83%(40 flights)
  • 9 PM–12 AM59%(17 flights)
On-time trend by month
77%
Mar

Jun 97% → Mar 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%34
July 202585%34
August 202584%32
September 202593%29
October 202568%37
November 202596%25
December 202596%27
January 202690%30
February 202682%28
March 202677%31
Departures on time
85%
Diverted
0%
Flights flown
314
Months covered
12

Keep nerding

Based on 317 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.