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Flight Reliability

WN 4247 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4247 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

78%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
7 min early
Median arrival delay

Based on 236 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(35 flights)
  • Tue77%(30 flights)
  • Wed82%(33 flights)
  • Thu76%(38 flights)
  • Fri86%(35 flights)
  • Sat85%(27 flights)
  • Sun69%(35 flights)
On-time by departure window
  • 6–9 AM91%(111 flights)
  • 9 AM–12 PM86%(64 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM39%(51 flights)
On-time trend by month
100%
May

Jun 41% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%22
July 202533%27
October 202568%22
November 202585%27
December 202591%22
January 2026100%28
February 202675%24
April 202696%24
May 2026100%30
Departures on time
78%
Diverted
0.4%
Flights flown
233
Months covered
11

Keep nerding

Based on 236 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.