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Flight Reliability

WN 1339 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1339 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

86%
Arrive within 15 minutes
0 min
Average arrival delay
1.5%
Cancelled
7 min early
Median arrival delay

Based on 413 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(61 flights)
  • Tue87%(63 flights)
  • Wed88%(60 flights)
  • Thu80%(64 flights)
  • Fri85%(60 flights)
  • Sat91%(46 flights)
  • Sun83%(52 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM89%(70 flights)
  • 9 AM–12 PM92%(157 flights)
  • 12–3 PM87%(120 flights)
  • 3–6 PM69%(45 flights)
  • 9 PM–12 AM33%(12 flights)
On-time trend by month
92%
May

Jun 91% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%33
July 202586%29
August 202590%52
September 202595%55
October 202549%39
November 202587%15
December 202592%25
January 202688%25
February 202688%32
March 202688%32
April 202685%33
May 202692%36
Departures on time
84%
Diverted
0.2%
Flights flown
406
Months covered
12

Keep nerding

Based on 413 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.