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Flight Reliability

WN 2503 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2503 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

79%
Arrive within 15 minutes
4 min
Average arrival delay
0.6%
Cancelled
6 min early
Median arrival delay

Based on 341 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(49 flights)
  • Tue86%(51 flights)
  • Wed86%(51 flights)
  • Thu67%(48 flights)
  • Fri82%(49 flights)
  • Sat78%(49 flights)
  • Sun81%(42 flights)
On-time by departure window
  • 3–6 AM92%(36 flights)
  • 6–9 AM94%(79 flights)
  • 9 AM–12 PM81%(47 flights)
  • 12–3 PM—(9 flights)
  • 3–6 PM71%(159 flights)
  • 6–9 PM—(9 flights)
On-time trend by month
100%
May

Jun 46% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%26
July 202558%31
August 202578%27
September 202569%26
October 202548%29
November 202593%29
December 2025100%31
January 202684%31
February 202672%18
March 202690%30
April 202693%30
May 2026100%31
Departures on time
72%
Diverted
0%
Flights flown
339
Months covered
12

Keep nerding

Based on 341 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.