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Flight Reliability

WN 3549 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3549 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

86%
Arrive within 15 minutes
3 min
Average arrival delay
0.4%
Cancelled
5 min early
Median arrival delay

Based on 266 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(31 flights)
  • Tue81%(47 flights)
  • Wed85%(47 flights)
  • Thu90%(29 flights)
  • Fri93%(30 flights)
  • Sat78%(37 flights)
  • Sun89%(44 flights)
On-time by departure window
  • 3–6 AM92%(24 flights)
  • 6–9 AM93%(120 flights)
  • 9 AM–12 PM90%(10 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM80%(49 flights)
  • 6–9 PM57%(23 flights)
  • 9 PM–12 AM78%(32 flights)
On-time trend by month
94%
May

Jun 75% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%16
July 2025100%17
August 202581%37
September 202587%39
November 202584%25
December 202579%29
March 202676%29
April 202693%30
May 202694%31
Departures on time
85%
Diverted
0%
Flights flown
265
Months covered
12

Keep nerding

Based on 266 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.