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Flight Reliability

WN 3451 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3451 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

72%
Arrive within 15 minutes
13 min
Average arrival delay
1.4%
Cancelled
2 min
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon58%(52 flights)
  • Tue71%(59 flights)
  • Wed78%(60 flights)
  • Thu67%(51 flights)
  • Fri76%(49 flights)
  • Sat79%(38 flights)
  • Sun79%(47 flights)
On-time by departure window
  • 3–6 AM94%(16 flights)
  • 6–9 AM93%(30 flights)
  • 9 AM–12 PM82%(79 flights)
  • 12–3 PM73%(48 flights)
  • 3–6 PM74%(100 flights)
  • 6–9 PM50%(26 flights)
  • 9 PM–12 AM47%(57 flights)
On-time trend by month
77%
May

Jun 72% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%32
July 202586%36
August 202569%49
September 202563%51
October 202590%39
November 202554%26
December 202539%28
March 202681%26
April 202683%30
May 202677%31
Departures on time
68%
Diverted
0.3%
Flights flown
356
Months covered
12

Keep nerding

Based on 362 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.