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Flight Reliability

WN 1737 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1737 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
14 min
Average arrival delay
1.5%
Cancelled
0 min
Median arrival delay

Based on 330 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon60%(53 flights)
  • Tue86%(44 flights)
  • Wed93%(43 flights)
  • Thu75%(51 flights)
  • Fri60%(52 flights)
  • Sat71%(38 flights)
  • Sun69%(42 flights)
On-time by departure window
  • 3–6 AM83%(65 flights)
  • 6–9 AM91%(57 flights)
  • 9 AM–12 PM75%(36 flights)
  • 12–3 PM94%(35 flights)
  • 3–6 PM39%(31 flights)
  • 6–9 PM64%(63 flights)
  • 9 PM–12 AM47%(36 flights)
On-time trend by month
93%
May

Jun 62% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%29
July 202570%27
August 202559%27
September 202558%26
October 202585%27
November 202593%29
December 202577%31
January 202683%12
February 202653%19
March 202662%39
April 202680%30
May 202693%27
Departures on time
72%
Diverted
0.6%
Flights flown
323
Months covered
12

Keep nerding

Based on 330 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.