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Flight Reliability

WN 1173 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1173 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

89%
Arrive within 15 minutes
3 min early
Average arrival delay
0.7%
Cancelled
8 min early
Median arrival delay

Based on 417 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(61 flights)
  • Tue94%(66 flights)
  • Wed90%(71 flights)
  • Thu92%(64 flights)
  • Fri91%(53 flights)
  • Sat86%(62 flights)
  • Sun75%(36 flights)
On-time by departure window
  • 3–6 AM91%(68 flights)
  • 6–9 AM95%(100 flights)
  • 9 AM–12 PM90%(80 flights)
  • 12–3 PM90%(69 flights)
  • 3–6 PM87%(38 flights)
  • 6–9 PM92%(36 flights)
  • 9 PM–12 AM50%(22 flights)
On-time trend by month
91%
May

Jun 83% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202584%32
August 202594%31
September 202593%30
October 202585%39
November 202591%57
December 202586%73
January 2026100%13
February 202688%16
March 202683%29
April 2026100%30
May 202691%33
Departures on time
83%
Diverted
0.2%
Flights flown
413
Months covered
12

Keep nerding

Based on 417 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.