Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 3784 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3784 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

74%
Arrive within 15 minutes
12 min
Average arrival delay
1.0%
Cancelled
1 min early
Median arrival delay

Based on 297 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(46 flights)
  • Tue73%(33 flights)
  • Wed71%(34 flights)
  • Thu64%(42 flights)
  • Fri71%(45 flights)
  • Sat80%(46 flights)
  • Sun77%(44 flights)
On-time by departure window
  • 3–6 AM96%(56 flights)
  • 6–9 AM87%(61 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM60%(88 flights)
  • 6–9 PM61%(70 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
63%
May

Jun 41% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%32
July 202541%29
August 202598%42
September 202581%43
October 202597%31
February 202662%13
March 202696%24
April 202669%32
May 202663%35
Departures on time
72%
Diverted
1.3%
Flights flown
290
Months covered
11

Keep nerding

Based on 297 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.