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Flight Reliability

WN 1788 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1788 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

83%
Arrive within 15 minutes
3 min
Average arrival delay
0.6%
Cancelled
5 min early
Median arrival delay

Based on 359 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(61 flights)
  • Tue91%(43 flights)
  • Wed82%(44 flights)
  • Thu76%(59 flights)
  • Fri88%(57 flights)
  • Sat77%(35 flights)
  • Sun79%(58 flights)
On-time by departure window
  • 3–6 AM100%(51 flights)
  • 6–9 AM98%(49 flights)
  • 9 AM–12 PM92%(26 flights)
  • 12–3 PM65%(37 flights)
  • 3–6 PM70%(71 flights)
  • 6–9 PM66%(41 flights)
  • 9 PM–12 AM89%(82 flights)
On-time trend by month
100%
May

Jun 64% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%36
July 202576%33
August 202593%28
September 202592%25
October 202596%27
November 202568%25
December 202562%26
January 202693%28
February 2026100%28
March 202667%39
April 202697%31
May 2026100%31
Departures on time
81%
Diverted
0%
Flights flown
357
Months covered
12

Keep nerding

Based on 359 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.