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Flight Reliability

WN 1657 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1657 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

77%
Arrive within 15 minutes
9 min
Average arrival delay
0.3%
Cancelled
4 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(47 flights)
  • Tue79%(56 flights)
  • Wed83%(53 flights)
  • Thu63%(43 flights)
  • Fri77%(47 flights)
  • Sat84%(50 flights)
  • Sun84%(49 flights)
On-time by departure window
  • 6–9 AM96%(82 flights)
  • 9 AM–12 PM74%(93 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM76%(102 flights)
  • 6–9 PM56%(64 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
53%
May

Jun 89% → May 53% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%18
July 202578%18
August 202565%40
September 202570%43
October 202597%30
November 202590%10
December 202586%22
January 202697%36
February 202689%26
March 202661%41
April 202671%31
May 202653%30
Departures on time
72%
Diverted
0.3%
Flights flown
345
Months covered
12

Keep nerding

Based on 347 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.