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WanderNerd

Flight Reliability

WN 1956 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1956 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
0.7%
Cancelled
1 min early
Median arrival delay

Based on 288 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(41 flights)
  • Tue87%(39 flights)
  • Wed87%(38 flights)
  • Thu55%(40 flights)
  • Fri57%(42 flights)
  • Sat90%(40 flights)
  • Sun72%(46 flights)
On-time by departure window
  • 3–6 AM88%(25 flights)
  • 6–9 AM92%(25 flights)
  • 9 AM–12 PM92%(24 flights)
  • 12–3 PM84%(75 flights)
  • 3–6 PM54%(111 flights)
  • 6–9 PM73%(26 flights)
On-time trend by month
85%
May

Jun 56% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202556%39
July 202569%42
August 202559%22
September 202571%17
October 202582%38
November 202573%22
December 202580%15
March 202692%26
April 202670%27
May 202685%26
Departures on time
66%
Diverted
0%
Flights flown
286
Months covered
12

Based on 288 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.