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Flight Reliability

WN 1534 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1534 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

87%
Arrive within 15 minutes
4 min early
Average arrival delay
1.4%
Cancelled
10 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(53 flights)
  • Tue85%(41 flights)
  • Wed96%(44 flights)
  • Thu89%(54 flights)
  • Fri84%(55 flights)
  • Sat91%(44 flights)
  • Sun88%(48 flights)
On-time by departure window
  • 3–6 AM92%(26 flights)
  • 6–9 AM91%(114 flights)
  • 9 AM–12 PM86%(120 flights)
  • 12–3 PM84%(51 flights)
  • 3–6 PM79%(28 flights)
On-time trend by month
78%
May

Jun 68% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%22
July 202591%22
August 2025100%25
September 202589%26
October 202580%35
November 202594%31
December 202585%33
January 202690%29
February 202690%40
March 202697%31
April 202682%22
May 202678%23
Departures on time
87%
Diverted
0.3%
Flights flown
339
Months covered
12

Keep nerding

Based on 345 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.