Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 3547 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3547 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

73%
Arrive within 15 minutes
11 min
Average arrival delay
0.2%
Cancelled
2 min early
Median arrival delay

Based on 430 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon60%(65 flights)
  • Tue86%(57 flights)
  • Wed77%(57 flights)
  • Thu68%(69 flights)
  • Fri79%(67 flights)
  • Sat67%(51 flights)
  • Sun72%(61 flights)
On-time by departure window
  • 6–9 AM100%(51 flights)
  • 9 AM–12 PM82%(147 flights)
  • 12–3 PM74%(82 flights)
  • 3–6 PM43%(35 flights)
  • 6–9 PM59%(99 flights)
  • 9 PM–12 AM31%(13 flights)
On-time trend by month
55%
May

Jun 73% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%37
July 202582%38
August 202592%62
September 202584%63
October 202584%50
November 202568%28
December 202552%29
February 2026100%10
April 202642%45
May 202655%56
Departures on time
68%
Diverted
0.5%
Flights flown
427
Months covered
12

Keep nerding

Based on 430 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.