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Flight Reliability

WN 2858 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2858 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

80%
Arrive within 15 minutes
3 min
Average arrival delay
1.3%
Cancelled
8 min early
Median arrival delay

Based on 309 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(45 flights)
  • Tue86%(43 flights)
  • Wed84%(44 flights)
  • Thu73%(44 flights)
  • Fri76%(41 flights)
  • Sat77%(39 flights)
  • Sun84%(49 flights)
On-time by departure window
  • 3–6 AM96%(23 flights)
  • 6–9 AM94%(52 flights)
  • 9 AM–12 PM94%(95 flights)
  • 12–3 PM53%(32 flights)
  • 3–6 PM47%(15 flights)
  • 6–9 PM67%(88 flights)
On-time trend by month
55%
Apr

Jun 72% → Apr 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%25
July 202568%19
August 202597%31
September 202597%30
October 202594%31
November 202587%15
December 202552%27
January 202688%42
February 202692%36
March 202655%33
April 202655%11
Departures on time
77%
Diverted
0%
Flights flown
305
Months covered
12

Keep nerding

Based on 309 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.