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Flight Reliability

WN 1554 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1554 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
6 min
Average arrival delay
2.0%
Cancelled
7 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(62 flights)
  • Tue90%(59 flights)
  • Wed79%(57 flights)
  • Thu79%(62 flights)
  • Fri86%(56 flights)
  • Sat59%(32 flights)
  • Sun76%(62 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM94%(82 flights)
  • 9 AM–12 PM95%(65 flights)
  • 12–3 PM80%(75 flights)
  • 3–6 PM76%(67 flights)
  • 6–9 PM54%(98 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
40%
May

Jun 87% → May 40% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%31
July 202590%31
August 202593%27
September 202596%25
October 202572%32
November 202592%25
December 202571%48
January 202690%29
February 202692%24
March 202684%50
April 202652%33
May 202640%35
Departures on time
75%
Diverted
0.5%
Flights flown
390
Months covered
12

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.