Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 3172 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3172 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

90%
Arrive within 15 minutes
0 min
Average arrival delay
0.8%
Cancelled
4 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon94%(54 flights)
  • Tue94%(48 flights)
  • Wed92%(50 flights)
  • Thu93%(54 flights)
  • Fri94%(54 flights)
  • Sat80%(54 flights)
  • Sun83%(46 flights)
On-time by departure window
  • 3–6 AM93%(75 flights)
  • 6–9 AM93%(186 flights)
  • 9 AM–12 PM85%(46 flights)
  • 12–3 PM88%(48 flights)
  • 6–9 PM—(1 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
80%
May

Jun 96% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%26
July 202590%31
August 202591%23
September 202591%22
November 202580%25
December 202596%23
January 202687%23
February 202696%27
March 202694%70
April 202693%45
May 202680%40
Departures on time
87%
Diverted
0.3%
Flights flown
360
Months covered
12

Keep nerding

Based on 364 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.