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Flight Reliability

WN 778 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 778 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

71%
Arrive within 15 minutes
10 min
Average arrival delay
2.2%
Cancelled
1 min
Median arrival delay

Based on 405 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(62 flights)
  • Tue76%(54 flights)
  • Wed77%(52 flights)
  • Thu69%(61 flights)
  • Fri73%(59 flights)
  • Sat82%(49 flights)
  • Sun55%(56 flights)
On-time by departure window
  • 6–9 AM93%(55 flights)
  • 9 AM–12 PM74%(73 flights)
  • 12–3 PM68%(123 flights)
  • 3–6 PM71%(34 flights)
  • 6–9 PM67%(58 flights)
  • 9 PM–12 AM54%(50 flights)
On-time trend by month
61%
May

Jun 62% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%29
July 202543%28
August 202581%26
September 202573%26
October 202565%60
November 202568%28
December 202553%40
January 202687%31
February 202696%28
March 202683%35
April 202690%31
May 202661%31
Departures on time
68%
Diverted
0.7%
Flights flown
393
Months covered
12

Keep nerding

Based on 405 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.