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Flight Reliability

WN 665 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 665 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

71%
Arrive within 15 minutes
12 min
Average arrival delay
0.3%
Cancelled
2 min early
Median arrival delay

Based on 352 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(56 flights)
  • Tue74%(61 flights)
  • Wed88%(60 flights)
  • Thu67%(55 flights)
  • Fri69%(52 flights)
  • Sat65%(26 flights)
  • Sun48%(40 flights)
On-time by departure window
  • 3–6 AM89%(26 flights)
  • 6–9 AM95%(20 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM82%(90 flights)
  • 3–6 PM58%(64 flights)
  • 6–9 PM66%(91 flights)
  • 9 PM–12 AM60%(58 flights)
On-time trend by month
65%
May

Jun 93% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%28
July 202581%32
August 202586%21
September 202591%22
October 202571%31
November 202547%30
December 202558%31
January 202669%36
February 202678%32
March 202667%27
April 202659%29
May 202665%31
Departures on time
67%
Diverted
0.3%
Flights flown
350
Months covered
12

Keep nerding

Based on 352 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.