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WanderNerd

Flight Reliability

WN 4850 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4850 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

53%
Arrive within 15 minutes
23 min
Average arrival delay
4.1%
Cancelled
11 min
Median arrival delay

Based on 122 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon56%(18 flights)
  • Tue39%(13 flights)
  • Wed60%(10 flights)
  • Thu69%(16 flights)
  • Fri50%(18 flights)
  • Sat50%(20 flights)
  • Sun52%(21 flights)
On-time by departure window
  • 9 AM–12 PM67%(24 flights)
  • 12–3 PM50%(12 flights)
  • 3–6 PM70%(20 flights)
  • 6–9 PM30%(10 flights)
  • 9 PM–12 AM46%(50 flights)
On-time trend by month
62%
Feb

Jun 48% → Feb 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%25
July 202543%30
January 202686%14
February 202662%29
Departures on time
49%
Diverted
0.8%
Flights flown
116
Months covered
8

Based on 122 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.