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Flight Reliability

WN 863 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 863 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

86%
Arrive within 15 minutes
4 min early
Average arrival delay
0.8%
Cancelled
9 min early
Median arrival delay

Based on 392 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(58 flights)
  • Tue96%(53 flights)
  • Wed96%(55 flights)
  • Thu85%(60 flights)
  • Fri86%(55 flights)
  • Sat88%(48 flights)
  • Sun75%(60 flights)
On-time by departure window
  • 3–6 AM96%(24 flights)
  • 6–9 AM96%(100 flights)
  • 9 AM–12 PM100%(59 flights)
  • 12–3 PM79%(90 flights)
  • 3–6 PM90%(51 flights)
  • 6–9 PM73%(48 flights)
  • 9 PM–12 AM29%(17 flights)
On-time trend by month
100%
May

Jun 96% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%27
July 202590%31
August 202590%30
September 202590%30
October 202561%23
November 202565%40
December 202585%47
January 202684%31
February 2026100%28
March 202670%27
April 202697%36
May 2026100%39
Departures on time
83%
Diverted
0%
Flights flown
389
Months covered
12

Keep nerding

Based on 392 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.