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Flight Reliability

WN 15 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 15 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

90%
Arrive within 15 minutes
3 min early
Average arrival delay
2.0%
Cancelled
10 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(65 flights)
  • Tue96%(44 flights)
  • Wed90%(49 flights)
  • Thu92%(76 flights)
  • Fri92%(74 flights)
  • Sat79%(28 flights)
  • Sun87%(55 flights)
On-time by departure window
  • 3–6 AM100%(62 flights)
  • 6–9 AM96%(67 flights)
  • 9 AM–12 PM87%(245 flights)
  • 12–3 PM—(5 flights)
  • 3–6 PM67%(12 flights)
On-time trend by month
93%
Mar

Jun 84% → Mar 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%37
July 202594%34
August 202590%39
September 202583%41
October 202591%75
November 202589%46
December 202593%28
January 202697%37
February 202692%39
March 202693%14
Departures on time
91%
Diverted
0.3%
Flights flown
391
Months covered
11

Keep nerding

Based on 400 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.