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Flight Reliability

WN 1738 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1738 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

78%
Arrive within 15 minutes
5 min
Average arrival delay
1.0%
Cancelled
3 min early
Median arrival delay

Based on 388 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(55 flights)
  • Tue63%(54 flights)
  • Wed66%(56 flights)
  • Thu89%(55 flights)
  • Fri89%(56 flights)
  • Sat76%(41 flights)
  • Sun76%(62 flights)
On-time by departure window
  • 3–6 AM98%(45 flights)
  • 6–9 AM90%(41 flights)
  • 9 AM–12 PM86%(44 flights)
  • 12–3 PM87%(54 flights)
  • 3–6 PM65%(159 flights)
  • 6–9 PM74%(35 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
54%
May

Jun 71% → May 54% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%31
July 202571%31
August 202577%30
September 202590%30
October 202594%35
November 202586%42
December 202588%34
January 202672%32
February 202682%28
March 202672%36
April 202673%26
May 202654%24
Departures on time
72%
Diverted
1.3%
Flights flown
379
Months covered
12

Keep nerding

Based on 388 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.