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Flight Reliability

WN 300 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 300 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

81%
Arrive within 15 minutes
3 min
Average arrival delay
0.5%
Cancelled
9 min early
Median arrival delay

Based on 435 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(68 flights)
  • Tue75%(57 flights)
  • Wed86%(59 flights)
  • Thu74%(73 flights)
  • Fri77%(69 flights)
  • Sat83%(40 flights)
  • Sun88%(65 flights)
On-time by departure window
  • 3–6 AM92%(24 flights)
  • 6–9 AM93%(81 flights)
  • 9 AM–12 PM82%(76 flights)
  • 12–3 PM72%(36 flights)
  • 3–6 PM77%(109 flights)
  • 6–9 PM76%(100 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
74%
May

Jun 68% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%37
July 202574%39
August 202572%32
September 202587%30
October 202590%30
November 202584%38
December 202582%45
January 2026100%18
February 202672%29
March 202691%34
April 202684%49
May 202674%50
Departures on time
76%
Diverted
0.5%
Flights flown
431
Months covered
12

Keep nerding

Based on 435 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.