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Flight Reliability

WN 3552 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3552 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

88%
Arrive within 15 minutes
3 min
Average arrival delay
0.4%
Cancelled
4 min early
Median arrival delay

Based on 251 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(30 flights)
  • Tue87%(37 flights)
  • Wed87%(37 flights)
  • Thu83%(29 flights)
  • Fri87%(30 flights)
  • Sat98%(40 flights)
  • Sun85%(47 flights)
On-time by departure window
  • 6–9 AM89%(45 flights)
  • 9 AM–12 PM85%(33 flights)
  • 12–3 PM89%(62 flights)
  • 3–6 PM92%(24 flights)
  • 6–9 PM81%(31 flights)
  • 9 PM–12 AM89%(55 flights)
On-time trend by month
84%
May

Jun 79% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%14
July 2025100%18
August 202586%21
September 202586%21
October 202595%20
November 202588%25
December 202582%27
March 202681%37
April 202697%32
May 202684%31
Departures on time
81%
Diverted
0%
Flights flown
250
Months covered
11

Keep nerding

Based on 251 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.