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Flight Reliability

WN 648 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 648 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

78%
Arrive within 15 minutes
9 min
Average arrival delay
2.2%
Cancelled
3 min early
Median arrival delay

Based on 314 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon70%(43 flights)
  • Tue91%(44 flights)
  • Wed88%(43 flights)
  • Thu76%(42 flights)
  • Fri76%(46 flights)
  • Sat80%(46 flights)
  • Sun60%(42 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM92%(82 flights)
  • 9 AM–12 PM88%(60 flights)
  • 12–3 PM73%(77 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM55%(67 flights)
  • 9 PM–12 AM87%(15 flights)
On-time trend by month
61%
May

Jun 73% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%26
July 202589%26
August 202572%29
September 202573%30
October 202588%24
November 202595%19
December 202567%15
January 202689%26
February 202693%28
March 202673%26
April 202662%29
May 202661%28
Departures on time
74%
Diverted
0.3%
Flights flown
306
Months covered
12

Keep nerding

Based on 314 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.