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Flight Reliability

WN 3730 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3730 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

82%
Arrive within 15 minutes
8 min
Average arrival delay
0%
Cancelled
6 min early
Median arrival delay

Based on 319 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(39 flights)
  • Tue88%(56 flights)
  • Wed80%(56 flights)
  • Thu71%(38 flights)
  • Fri93%(40 flights)
  • Sat84%(43 flights)
  • Sun78%(45 flights)
On-time by departure window
  • 6–9 AM95%(63 flights)
  • 9 AM–12 PM82%(107 flights)
  • 12–3 PM83%(54 flights)
  • 3–6 PM82%(45 flights)
  • 6–9 PM63%(48 flights)
On-time trend by month
55%
May

Jun 89% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%36
July 202588%41
August 202574%39
September 202592%39
November 202592%26
December 202597%31
March 202671%35
April 202674%31
May 202655%31
Departures on time
76%
Diverted
0.6%
Flights flown
317
Months covered
11

Keep nerding

Based on 319 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.