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Flight Reliability

WN 1778 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1778 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

70%
Arrive within 15 minutes
16 min
Average arrival delay
1.8%
Cancelled
1 min early
Median arrival delay

Based on 389 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(63 flights)
  • Tue78%(41 flights)
  • Wed77%(43 flights)
  • Thu65%(63 flights)
  • Fri65%(66 flights)
  • Sat74%(50 flights)
  • Sun75%(55 flights)
On-time by departure window
  • 3–6 AM100%(69 flights)
  • 6–9 AM92%(25 flights)
  • 9 AM–12 PM82%(73 flights)
  • 12–3 PM73%(74 flights)
  • 3–6 PM41%(42 flights)
  • 6–9 PM54%(76 flights)
  • 9 PM–12 AM14%(22 flights)
On-time trend by month
16%
May

Jun 63% → May 16% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%27
July 202560%25
August 202597%30
September 2025100%30
October 202592%51
November 202583%41
December 202586%35
January 202673%15
February 202663%19
March 202670%27
April 202642%38
May 202616%43
Departures on time
67%
Diverted
0.3%
Flights flown
381
Months covered
12

Keep nerding

Based on 389 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.