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Flight Reliability

WN 1667 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1667 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
11 min
Average arrival delay
0.9%
Cancelled
2 min early
Median arrival delay

Based on 324 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(39 flights)
  • Tue84%(50 flights)
  • Wed81%(52 flights)
  • Thu66%(41 flights)
  • Fri59%(41 flights)
  • Sat84%(49 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 3–6 AM93%(100 flights)
  • 6–9 AM89%(27 flights)
  • 9 AM–12 PM88%(32 flights)
  • 12–3 PM89%(47 flights)
  • 3–6 PM—(8 flights)
  • 6–9 PM51%(81 flights)
  • 9 PM–12 AM23%(26 flights)
On-time trend by month
36%
May

Jun 83% → May 36% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202594%31
August 202594%16
September 2025100%13
October 202593%30
November 202580%30
December 202571%31
January 202679%29
February 202696%22
March 202664%28
April 202633%30
May 202636%31
Departures on time
73%
Diverted
0%
Flights flown
321
Months covered
12

Keep nerding

Based on 324 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.