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Flight Reliability

WN 1311 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1311 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

83%
Arrive within 15 minutes
3 min
Average arrival delay
0%
Cancelled
6 min early
Median arrival delay

Based on 351 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(60 flights)
  • Tue80%(30 flights)
  • Wed82%(27 flights)
  • Thu83%(58 flights)
  • Fri75%(61 flights)
  • Sat78%(45 flights)
  • Sun86%(70 flights)
On-time by departure window
  • 6–9 AM96%(47 flights)
  • 9 AM–12 PM88%(84 flights)
  • 12–3 PM85%(48 flights)
  • 3–6 PM76%(121 flights)
  • 6–9 PM82%(38 flights)
  • 9 PM–12 AM54%(13 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%24
July 2025100%21
August 202579%34
September 202591%34
October 202569%26
November 202574%19
December 202565%17
January 202697%31
February 202680%35
March 202668%28
April 202687%38
May 202680%44
Departures on time
75%
Diverted
0%
Flights flown
351
Months covered
12

Keep nerding

Based on 351 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.