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Flight Reliability

WN 4618 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4618 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

62%
Arrive within 15 minutes
28 min
Average arrival delay
3.4%
Cancelled
4 min
Median arrival delay

Based on 175 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon48%(29 flights)
  • Tue90%(19 flights)
  • Wed86%(14 flights)
  • Thu57%(23 flights)
  • Fri66%(29 flights)
  • Sat73%(22 flights)
  • Sun39%(33 flights)
On-time by departure window
  • 9 AM–12 PM75%(12 flights)
  • 12–3 PM83%(18 flights)
  • 3–6 PM78%(59 flights)
  • 6–9 PM43%(80 flights)
On-time trend by month
50%
Apr

Jun 48% → Apr 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%27
July 202553%30
December 202578%18
February 202644%16
March 202683%41
April 202650%12
Departures on time
53%
Diverted
0%
Flights flown
169
Months covered
10

Keep nerding

Based on 175 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.