Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1951 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1951 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
12 min
Average arrival delay
0.6%
Cancelled
0 min
Median arrival delay

Based on 337 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(50 flights)
  • Tue83%(40 flights)
  • Wed90%(39 flights)
  • Thu76%(49 flights)
  • Fri66%(50 flights)
  • Sat70%(59 flights)
  • Sun58%(48 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM89%(36 flights)
  • 9 AM–12 PM77%(84 flights)
  • 12–3 PM78%(40 flights)
  • 3–6 PM74%(107 flights)
  • 6–9 PM55%(56 flights)
  • 9 PM–12 AM64%(11 flights)
On-time trend by month
84%
May

Jun 67% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202577%30
August 202573%30
September 202587%30
October 202581%31
November 202563%41
December 202563%35
January 202670%10
March 202656%27
April 202684%31
May 202684%31
Departures on time
69%
Diverted
0%
Flights flown
335
Months covered
12

Keep nerding

Based on 337 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.