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Flight Reliability

WN 1177 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1177 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

75%
Arrive within 15 minutes
9 min
Average arrival delay
1.2%
Cancelled
0 min
Median arrival delay

Based on 421 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(64 flights)
  • Tue87%(53 flights)
  • Wed81%(53 flights)
  • Thu66%(67 flights)
  • Fri73%(66 flights)
  • Sat63%(46 flights)
  • Sun76%(66 flights)
On-time by departure window
  • 3–6 AM94%(16 flights)
  • 6–9 AM96%(79 flights)
  • 9 AM–12 PM79%(42 flights)
  • 12–3 PM69%(75 flights)
  • 3–6 PM68%(96 flights)
  • 6–9 PM64%(107 flights)
On-time trend by month
64%
May

Jun 93% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%27
July 202588%25
August 202574%27
September 202583%30
October 202563%27
November 202574%31
December 202588%33
January 202679%28
February 202680%25
March 202658%31
April 202671%59
May 202664%72
Departures on time
66%
Diverted
0.2%
Flights flown
415
Months covered
12

Keep nerding

Based on 421 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.