Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 408 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 408 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

80%
Arrive within 15 minutes
6 min
Average arrival delay
0.8%
Cancelled
4 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(62 flights)
  • Tue83%(48 flights)
  • Wed94%(48 flights)
  • Thu69%(64 flights)
  • Fri77%(61 flights)
  • Sat90%(61 flights)
  • Sun84%(51 flights)
On-time by departure window
  • 3–6 AM100%(11 flights)
  • 6–9 AM90%(127 flights)
  • 9 AM–12 PM100%(33 flights)
  • 12–3 PM71%(126 flights)
  • 3–6 PM71%(85 flights)
  • 6–9 PM77%(13 flights)
On-time trend by month
94%
May

Jun 59% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%49
July 202565%49
August 202567%45
September 202588%43
October 202587%31
November 202587%30
December 202590%31
January 202690%29
February 202693%27
March 202685%26
April 2026100%17
May 202694%18
Departures on time
76%
Diverted
0.5%
Flights flown
395
Months covered
12

Keep nerding

Based on 400 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.