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Flight Reliability

WN 4426 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4426 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

76%
Arrive within 15 minutes
11 min
Average arrival delay
0%
Cancelled
3 min early
Median arrival delay

Based on 202 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(31 flights)
  • Tue74%(27 flights)
  • Wed96%(26 flights)
  • Thu74%(31 flights)
  • Fri65%(31 flights)
  • Sat85%(27 flights)
  • Sun76%(29 flights)
On-time by departure window
  • 6–9 AM—(2 flights)
  • 9 AM–12 PM87%(31 flights)
  • 12–3 PM83%(29 flights)
  • 3–6 PM80%(50 flights)
  • 6–9 PM66%(89 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
90%
Apr

Jun 100% → Apr 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%12
August 202564%25
September 202593%27
October 202575%32
November 202562%26
December 202562%29
March 202674%23
April 202690%10
Departures on time
69%
Diverted
0%
Flights flown
202
Months covered
11

Keep nerding

Based on 202 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.