Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 803 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 803 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

81%
Arrive within 15 minutes
4 min
Average arrival delay
0.8%
Cancelled
5 min early
Median arrival delay

Based on 370 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(57 flights)
  • Tue75%(55 flights)
  • Wed83%(54 flights)
  • Thu87%(52 flights)
  • Fri89%(53 flights)
  • Sat71%(49 flights)
  • Sun81%(47 flights)
On-time by departure window
  • 3–6 AM96%(49 flights)
  • 6–9 AM85%(20 flights)
  • 9 AM–12 PM83%(70 flights)
  • 12–3 PM75%(44 flights)
  • 3–6 PM81%(78 flights)
  • 6–9 PM73%(99 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
74%
May

Jun 89% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%26
July 202585%20
August 202589%26
September 202596%26
October 202593%43
November 202579%33
December 202568%41
January 202676%33
February 202674%27
March 202671%31
April 202680%30
May 202674%31
Departures on time
72%
Diverted
0%
Flights flown
367
Months covered
12

Keep nerding

Based on 370 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.