Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1335 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1335 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

87%
Arrive within 15 minutes
1 min early
Average arrival delay
1.1%
Cancelled
7 min early
Median arrival delay

Based on 440 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(64 flights)
  • Tue84%(64 flights)
  • Wed77%(64 flights)
  • Thu97%(64 flights)
  • Fri86%(62 flights)
  • Sat87%(47 flights)
  • Sun92%(66 flights)
On-time by departure window
  • 3–6 AM—(3 flights)
  • 6–9 AM91%(197 flights)
  • 9 AM–12 PM83%(151 flights)
  • 12–3 PM79%(24 flights)
  • 3–6 PM86%(56 flights)
On-time trend by month
90%
May

Jun 86% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%29
July 202583%29
August 202589%26
September 202589%26
October 202574%39
November 202587%30
December 202587%31
January 202682%34
February 202698%44
March 202683%29
April 202691%53
May 202690%61
Departures on time
86%
Diverted
0.9%
Flights flown
431
Months covered
12

Keep nerding

Based on 440 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.