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Flight Reliability

WN 3303 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3303 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

77%
Arrive within 15 minutes
5 min
Average arrival delay
2.3%
Cancelled
4 min early
Median arrival delay

Based on 398 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(55 flights)
  • Tue82%(56 flights)
  • Wed90%(57 flights)
  • Thu54%(54 flights)
  • Fri61%(56 flights)
  • Sat87%(55 flights)
  • Sun84%(55 flights)
On-time by departure window
  • 6–9 AM93%(121 flights)
  • 9 AM–12 PM74%(72 flights)
  • 12–3 PM73%(161 flights)
  • 3–6 PM28%(18 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM54%(13 flights)
On-time trend by month
69%
May

Aug 77% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202577%44
September 202545%47
October 202574%35
November 202593%41
December 202596%53
January 202690%31
February 202684%25
March 202668%37
April 202667%33
May 202669%35
Departures on time
74%
Diverted
0.3%
Flights flown
388
Months covered
12

Keep nerding

Based on 398 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.