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WanderNerd

Flight Reliability

WN 3907 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3907 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

69%
Arrive within 15 minutes
15 min
Average arrival delay
0%
Cancelled
4 min
Median arrival delay

Based on 144 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon57%(21 flights)
  • Tue50%(16 flights)
  • Wed71%(14 flights)
  • Thu82%(17 flights)
  • Fri64%(22 flights)
  • Sat88%(17 flights)
  • Sun73%(37 flights)
On-time by departure window
  • 3–6 AM(7 flights)
  • 6–9 AM(1 flights)
  • 9 AM–12 PM84%(25 flights)
  • 12–3 PM79%(43 flights)
  • 3–6 PM50%(50 flights)
  • 9 PM–12 AM78%(18 flights)
On-time trend by month
91%
Apr

Jun 83% → Apr 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%24
July 202562%21
November 202573%15
December 202539%13
March 202668%41
April 202691%11
Departures on time
62%
Diverted
0%
Flights flown
144
Months covered
11

Based on 144 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.