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Flight Reliability

WN 3508 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3508 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

69%
Arrive within 15 minutes
15 min
Average arrival delay
0%
Cancelled
2 min early
Median arrival delay

Based on 232 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon47%(17 flights)
  • Tue97%(29 flights)
  • Wed83%(29 flights)
  • Thu55%(20 flights)
  • Fri52%(21 flights)
  • Sat72%(68 flights)
  • Sun62%(47 flights)
On-time by departure window
  • 3–6 AM96%(25 flights)
  • 6–9 AM96%(26 flights)
  • 9 AM–12 PM77%(13 flights)
  • 12–3 PM64%(69 flights)
  • 3–6 PM52%(42 flights)
  • 6–9 PM59%(49 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
40%
May

Jun 85% → May 40% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202581%31
August 202567%12
October 202576%37
February 2026100%10
March 202668%28
April 202661%33
May 202640%35
Departures on time
65%
Diverted
0.4%
Flights flown
231
Months covered
12

Keep nerding

Based on 232 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.