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Flight Reliability

WN 687 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 687 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

83%
Arrive within 15 minutes
3 min
Average arrival delay
0.7%
Cancelled
5 min early
Median arrival delay

Based on 427 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(63 flights)
  • Tue73%(59 flights)
  • Wed79%(58 flights)
  • Thu88%(60 flights)
  • Fri87%(61 flights)
  • Sat90%(57 flights)
  • Sun74%(65 flights)
On-time by departure window
  • 3–6 AM99%(69 flights)
  • 6–9 AM92%(117 flights)
  • 9 AM–12 PM88%(69 flights)
  • 12–3 PM83%(54 flights)
  • 3–6 PM50%(26 flights)
  • 6–9 PM65%(82 flights)
  • 9 PM–12 AM—(6 flights)
On-time trend by month
65%
May

Jun 91% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%35
July 202591%34
August 202588%43
September 202588%42
October 202585%39
November 202587%38
December 202574%43
January 202689%36
February 202696%27
March 202665%26
April 202662%29
May 202665%31
Departures on time
81%
Diverted
0.2%
Flights flown
423
Months covered
12

Keep nerding

Based on 427 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.