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Flight Reliability

WN 3788 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3788 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

78%
Arrive within 15 minutes
7 min
Average arrival delay
1.0%
Cancelled
2 min early
Median arrival delay

Based on 310 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(54 flights)
  • Tue89%(36 flights)
  • Wed77%(34 flights)
  • Thu74%(50 flights)
  • Fri85%(60 flights)
  • Sat73%(30 flights)
  • Sun74%(43 flights)
On-time by departure window
  • 3–6 AM76%(25 flights)
  • 6–9 AM87%(37 flights)
  • 9 AM–12 PM91%(63 flights)
  • 12–3 PM79%(57 flights)
  • 3–6 PM73%(40 flights)
  • 6–9 PM62%(39 flights)
  • 9 PM–12 AM74%(46 flights)
On-time trend by month
67%
May

Jun 82% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%28
July 202584%31
August 202573%48
September 202587%52
October 202593%14
November 202586%28
December 202575%16
March 202663%27
April 202678%27
May 202667%27
Departures on time
74%
Diverted
0%
Flights flown
307
Months covered
12

Keep nerding

Based on 310 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.