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Flight Reliability

WN 873 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 873 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

71%
Arrive within 15 minutes
13 min
Average arrival delay
1.0%
Cancelled
1 min
Median arrival delay

Based on 307 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(51 flights)
  • Tue65%(46 flights)
  • Wed67%(43 flights)
  • Thu74%(46 flights)
  • Fri73%(48 flights)
  • Sat82%(28 flights)
  • Sun67%(42 flights)
On-time by departure window
  • 3–6 AM—(8 flights)
  • 6–9 AM89%(65 flights)
  • 9 AM–12 PM69%(16 flights)
  • 12–3 PM60%(74 flights)
  • 3–6 PM72%(43 flights)
  • 6–9 PM66%(98 flights)
On-time trend by month
74%
May

Jun 82% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%22
July 202574%23
August 202571%17
September 202541%17
October 202560%30
November 202568%34
December 202566%38
January 202658%12
February 202692%12
March 202691%23
April 202678%37
May 202674%39
Departures on time
67%
Diverted
0%
Flights flown
304
Months covered
12

Keep nerding

Based on 307 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.