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Flight Reliability

WN 3477 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3477 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
11 min
Average arrival delay
0%
Cancelled
0 min
Median arrival delay

Based on 388 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon51%(57 flights)
  • Tue84%(45 flights)
  • Wed87%(45 flights)
  • Thu68%(63 flights)
  • Fri74%(61 flights)
  • Sat79%(47 flights)
  • Sun70%(69 flights)
On-time by departure window
  • 6–9 AM83%(102 flights)
  • 9 AM–12 PM93%(85 flights)
  • 12–3 PM63%(32 flights)
  • 3–6 PM59%(117 flights)
  • 6–9 PM50%(50 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
79%
May

Jun 77% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%35
July 202581%37
August 202572%50
September 202555%51
October 202552%65
February 202690%10
March 202686%28
April 202688%48
May 202679%52
Departures on time
67%
Diverted
0.3%
Flights flown
387
Months covered
12

Keep nerding

Based on 388 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.