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Flight Reliability

WN 766 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 766 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

70%
Arrive within 15 minutes
14 min
Average arrival delay
2.5%
Cancelled
0 min
Median arrival delay

Based on 438 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(61 flights)
  • Tue73%(77 flights)
  • Wed81%(79 flights)
  • Thu59%(63 flights)
  • Fri66%(59 flights)
  • Sat79%(42 flights)
  • Sun56%(45 flights)
On-time by departure window
  • 6–9 AM93%(76 flights)
  • 9 AM–12 PM84%(51 flights)
  • 12–3 PM76%(71 flights)
  • 3–6 PM54%(124 flights)
  • 6–9 PM64%(66 flights)
  • 9 PM–12 AM50%(38 flights)
On-time trend by month
52%
May

Jun 56% → May 52% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202556%45
July 202566%59
August 202568%40
September 202564%42
October 202589%18
November 202569%35
December 202581%41
January 202687%31
February 202689%28
March 202674%27
April 202659%29
May 202652%31
Departures on time
64%
Diverted
0.2%
Flights flown
426
Months covered
12

Keep nerding

Based on 438 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.