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Flight Reliability

WN 1318 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1318 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
1 min
Average arrival delay
0.9%
Cancelled
9 min early
Median arrival delay

Based on 340 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(52 flights)
  • Tue86%(44 flights)
  • Wed93%(43 flights)
  • Thu85%(54 flights)
  • Fri80%(55 flights)
  • Sat84%(31 flights)
  • Sun68%(57 flights)
On-time by departure window
  • 6–9 AM93%(97 flights)
  • 9 AM–12 PM92%(73 flights)
  • 12–3 PM75%(98 flights)
  • 3–6 PM71%(49 flights)
  • 6–9 PM71%(14 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
96%
May

Jun 73% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202566%29
August 202578%27
September 2025100%26
October 202577%26
November 202595%38
December 202591%33
January 202668%28
February 202675%24
March 202683%30
April 202696%22
May 202696%23
Departures on time
80%
Diverted
0.3%
Flights flown
336
Months covered
12

Keep nerding

Based on 340 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.