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Flight Reliability

WN 1687 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1687 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

76%
Arrive within 15 minutes
13 min
Average arrival delay
0.7%
Cancelled
3 min early
Median arrival delay

Based on 401 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(67 flights)
  • Tue79%(47 flights)
  • Wed65%(48 flights)
  • Thu76%(66 flights)
  • Fri82%(67 flights)
  • Sat71%(48 flights)
  • Sun86%(55 flights)
On-time by departure window
  • 6–9 AM94%(102 flights)
  • 9 AM–12 PM77%(106 flights)
  • 12–3 PM85%(39 flights)
  • 3–6 PM66%(68 flights)
  • 6–9 PM55%(47 flights)
  • 9 PM–12 AM53%(36 flights)
On-time trend by month
41%
May

Jun 85% → May 41% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202593%27
August 202591%45
September 202589%47
October 202594%31
November 202547%30
December 202565%31
January 202664%14
February 2026100%16
March 202672%64
April 202665%37
May 202641%29
Departures on time
72%
Diverted
0%
Flights flown
398
Months covered
12

Keep nerding

Based on 401 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.