Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 3430 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3430 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
13 min
Average arrival delay
0.8%
Cancelled
1 min early
Median arrival delay

Based on 258 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(39 flights)
  • Tue70%(33 flights)
  • Wed88%(34 flights)
  • Thu78%(41 flights)
  • Fri68%(41 flights)
  • Sat79%(33 flights)
  • Sun59%(34 flights)
On-time by departure window
  • 6–9 AM—(5 flights)
  • 9 AM–12 PM87%(75 flights)
  • 12–3 PM65%(95 flights)
  • 3–6 PM73%(63 flights)
  • 6–9 PM59%(17 flights)
On-time trend by month
61%
May

Oct 77% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202577%52
November 202563%27
December 202564%28
January 202686%21
February 202679%19
March 202681%26
April 202669%32
May 202661%33
Departures on time
71%
Diverted
0.4%
Flights flown
255
Months covered
11

Keep nerding

Based on 258 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.