Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 3848 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3848 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

72%
Arrive within 15 minutes
17 min
Average arrival delay
1.1%
Cancelled
4 min
Median arrival delay

Based on 277 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(37 flights)
  • Tue88%(49 flights)
  • Wed85%(52 flights)
  • Thu47%(36 flights)
  • Fri73%(37 flights)
  • Sat74%(27 flights)
  • Sun57%(35 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM85%(87 flights)
  • 9 AM–12 PM68%(25 flights)
  • 12–3 PM93%(27 flights)
  • 3–6 PM72%(60 flights)
  • 6–9 PM58%(31 flights)
  • 9 PM–12 AM43%(42 flights)
On-time trend by month
68%
May

Jun 48% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%23
July 202535%20
August 202593%42
September 202593%44
November 202565%23
December 202571%17
March 202645%20
April 202672%36
May 202668%38
Departures on time
71%
Diverted
0.4%
Flights flown
273
Months covered
11

Keep nerding

Based on 277 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.