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Flight Reliability

WN 2515 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2515 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

66%
Arrive within 15 minutes
18 min
Average arrival delay
1.0%
Cancelled
2 min
Median arrival delay

Based on 392 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(74 flights)
  • Tue72%(29 flights)
  • Wed83%(23 flights)
  • Thu57%(69 flights)
  • Fri56%(73 flights)
  • Sat71%(42 flights)
  • Sun72%(78 flights)
On-time by departure window
  • 6–9 AM93%(67 flights)
  • 9 AM–12 PM81%(84 flights)
  • 12–3 PM62%(55 flights)
  • 3–6 PM51%(49 flights)
  • 6–9 PM46%(109 flights)
  • 9 PM–12 AM67%(24 flights)
On-time trend by month
42%
May

Jun 53% → May 42% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%32
July 202538%29
August 202562%55
September 202583%59
October 202590%30
November 202548%21
December 202546%26
January 202693%30
February 202675%36
March 202654%13
April 202677%26
May 202642%31
Departures on time
59%
Diverted
0%
Flights flown
388
Months covered
12

Keep nerding

Based on 392 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.