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Flight Reliability

WN 3771 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3771 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
8 min
Average arrival delay
1.0%
Cancelled
3 min early
Median arrival delay

Based on 305 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(43 flights)
  • Tue83%(47 flights)
  • Wed87%(47 flights)
  • Thu72%(43 flights)
  • Fri77%(44 flights)
  • Sat74%(42 flights)
  • Sun74%(35 flights)
On-time by departure window
  • 6–9 AM100%(16 flights)
  • 9 AM–12 PM73%(30 flights)
  • 12–3 PM77%(82 flights)
  • 3–6 PM78%(82 flights)
  • 6–9 PM77%(91 flights)
On-time trend by month
58%
May

Jun 63% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202597%31
August 202573%30
September 202587%30
October 202577%39
November 202590%29
December 202576%33
March 202667%21
April 202689%26
May 202658%26
Departures on time
72%
Diverted
0.3%
Flights flown
301
Months covered
11

Keep nerding

Based on 305 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.