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Flight Reliability

WN 157 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 157 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

84%
Arrive within 15 minutes
2 min
Average arrival delay
0.3%
Cancelled
9 min early
Median arrival delay

Based on 372 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(52 flights)
  • Tue96%(51 flights)
  • Wed90%(51 flights)
  • Thu83%(52 flights)
  • Fri87%(52 flights)
  • Sat81%(57 flights)
  • Sun75%(55 flights)
On-time by departure window
  • 6–9 AM93%(183 flights)
  • 9 AM–12 PM94%(33 flights)
  • 12–3 PM73%(74 flights)
  • 3–6 PM81%(31 flights)
  • 6–9 PM63%(49 flights)
On-time trend by month
91%
May

Jun 73% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202581%31
August 202590%31
September 202597%30
October 202577%30
November 202580%30
December 202565%31
January 202690%31
February 202689%27
March 202683%35
April 202697%31
May 202691%33
Departures on time
83%
Diverted
0.3%
Flights flown
370
Months covered
12

Keep nerding

Based on 372 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.