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Flight Reliability

WN 554 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 554 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
10 min
Average arrival delay
0.2%
Cancelled
2 min early
Median arrival delay

Based on 420 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(69 flights)
  • Tue78%(46 flights)
  • Wed71%(44 flights)
  • Thu76%(71 flights)
  • Fri82%(71 flights)
  • Sat73%(67 flights)
  • Sun70%(50 flights)
On-time by departure window
  • 6–9 AM86%(44 flights)
  • 9 AM–12 PM82%(140 flights)
  • 12–3 PM71%(62 flights)
  • 3–6 PM61%(44 flights)
  • 6–9 PM73%(128 flights)
On-time trend by month
87%
May

Jun 76% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%42
July 202567%43
August 202573%33
September 202590%30
October 202580%78
November 202576%21
December 202577%17
January 202683%30
February 202664%28
March 202654%35
April 202684%31
May 202687%30
Departures on time
77%
Diverted
0.2%
Flights flown
418
Months covered
12

Keep nerding

Based on 420 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.