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Flight Reliability

WN 4383 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 4383 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

73%
Arrive within 15 minutes
9 min
Average arrival delay
0%
Cancelled
0 min
Median arrival delay

Based on 220 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(32 flights)
  • Tue84%(31 flights)
  • Wed73%(30 flights)
  • Thu63%(30 flights)
  • Fri75%(32 flights)
  • Sat58%(26 flights)
  • Sun72%(39 flights)
On-time by departure window
  • 6–9 AM91%(11 flights)
  • 9 AM–12 PM79%(24 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM78%(32 flights)
  • 6–9 PM74%(131 flights)
  • 9 PM–12 AM45%(20 flights)
On-time trend by month
77%
May

Jun 61% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%18
July 202553%19
November 202568%28
December 202581%31
February 202681%16
March 202681%41
April 202677%30
May 202677%26
Departures on time
67%
Diverted
0%
Flights flown
220
Months covered
11

Keep nerding

Based on 220 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.