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Flight Reliability

WN 2539 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2539 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

71%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
1 min
Median arrival delay

Based on 384 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon61%(66 flights)
  • Tue73%(45 flights)
  • Wed84%(44 flights)
  • Thu72%(64 flights)
  • Fri74%(61 flights)
  • Sat78%(46 flights)
  • Sun62%(53 flights)
On-time by departure window
  • 3–6 AM—(7 flights)
  • 6–9 AM84%(103 flights)
  • 9 AM–12 PM73%(41 flights)
  • 12–3 PM71%(84 flights)
  • 3–6 PM56%(108 flights)
  • 6–9 PM81%(36 flights)
On-time trend by month
45%
May

Jun 75% → May 45% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%56
July 202565%54
August 202570%37
September 202571%34
October 202584%31
November 202577%30
December 202584%31
February 202691%11
March 202672%25
April 202667%30
May 202645%31
Departures on time
68%
Diverted
0.5%
Flights flown
379
Months covered
12

Keep nerding

Based on 384 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.