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Flight Reliability

WN 651 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 651 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

73%
Arrive within 15 minutes
11 min
Average arrival delay
1.0%
Cancelled
1 min early
Median arrival delay

Based on 312 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(56 flights)
  • Tue74%(38 flights)
  • Wed69%(35 flights)
  • Thu70%(54 flights)
  • Fri76%(58 flights)
  • Sat85%(26 flights)
  • Sun62%(39 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM97%(36 flights)
  • 9 AM–12 PM71%(92 flights)
  • 12–3 PM73%(113 flights)
  • 3–6 PM64%(22 flights)
  • 6–9 PM—(5 flights)
  • 9 PM–12 AM62%(37 flights)
On-time trend by month
68%
May

Jun 77% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%34
July 202591%35
August 202559%27
September 202568%25
October 202593%27
November 202553%17
December 202560%15
January 202664%25
February 202696%27
March 202663%30
April 202659%22
May 202668%22
Departures on time
73%
Diverted
1.0%
Flights flown
306
Months covered
12

Keep nerding

Based on 312 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.