Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 2504 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2504 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
1 min early
Average arrival delay
1.4%
Cancelled
9 min early
Median arrival delay

Based on 436 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon93%(71 flights)
  • Tue80%(55 flights)
  • Wed87%(52 flights)
  • Thu83%(71 flights)
  • Fri87%(68 flights)
  • Sat83%(46 flights)
  • Sun88%(67 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM96%(142 flights)
  • 9 AM–12 PM82%(120 flights)
  • 12–3 PM79%(91 flights)
  • 3–6 PM—(9 flights)
  • 6–9 PM87%(63 flights)
On-time trend by month
84%
May

Jun 73% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%26
July 202574%27
August 202586%22
September 2025100%21
October 202579%29
November 202590%30
December 202581%31
January 202695%63
February 202694%81
March 202669%39
April 202690%30
May 202684%31
Departures on time
82%
Diverted
0%
Flights flown
430
Months covered
12

Keep nerding

Based on 436 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.