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Flight Reliability

WN 2478 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2478 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

76%
Arrive within 15 minutes
9 min
Average arrival delay
0.7%
Cancelled
1 min early
Median arrival delay

Based on 283 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(47 flights)
  • Tue72%(32 flights)
  • Wed89%(27 flights)
  • Thu71%(42 flights)
  • Fri71%(48 flights)
  • Sat88%(41 flights)
  • Sun81%(43 flights)
On-time by departure window
  • 6–9 AM93%(58 flights)
  • 9 AM–12 PM81%(42 flights)
  • 12–3 PM73%(82 flights)
  • 3–6 PM73%(66 flights)
  • 6–9 PM55%(31 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
47%
May

Jun 93% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%28
July 202594%31
August 202578%27
September 202573%26
October 202584%31
November 202577%22
December 202568%25
January 202694%16
March 202652%27
April 202674%19
May 202647%19
Departures on time
74%
Diverted
0.4%
Flights flown
280
Months covered
12

Keep nerding

Based on 283 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.