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Flight Reliability

WN 2520 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2520 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

67%
Arrive within 15 minutes
13 min
Average arrival delay
0.9%
Cancelled
5 min
Median arrival delay

Based on 320 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(53 flights)
  • Tue81%(36 flights)
  • Wed82%(34 flights)
  • Thu65%(52 flights)
  • Fri66%(55 flights)
  • Sat72%(39 flights)
  • Sun45%(47 flights)
On-time by departure window
  • 6–9 AM98%(46 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM75%(83 flights)
  • 3–6 PM55%(109 flights)
  • 6–9 PM65%(68 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
96%
May

Jun 62% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%66
July 202550%66
August 202555%11
October 202583%30
November 202569%16
December 202569%16
January 202675%20
March 202648%29
April 202693%27
May 202696%26
Departures on time
61%
Diverted
0.3%
Flights flown
316
Months covered
11

Keep nerding

Based on 320 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.