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Flight Reliability

WN 1988 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1988 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

78%
Arrive within 15 minutes
6 min
Average arrival delay
0%
Cancelled
7 min early
Median arrival delay

Based on 285 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(43 flights)
  • Tue81%(32 flights)
  • Wed61%(31 flights)
  • Thu88%(42 flights)
  • Fri67%(45 flights)
  • Sat85%(34 flights)
  • Sun75%(57 flights)
On-time by departure window
  • 3–6 AM94%(53 flights)
  • 6–9 AM94%(33 flights)
  • 9 AM–12 PM81%(59 flights)
  • 12–3 PM65%(76 flights)
  • 3–6 PM66%(35 flights)
  • 6–9 PM68%(28 flights)
On-time trend by month
78%
May

Jun 87% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202583%30
August 202574%23
September 202571%21
October 202566%29
November 202579%19
December 202587%15
January 202676%29
February 202679%28
April 202679%24
May 202678%32
Departures on time
76%
Diverted
0.4%
Flights flown
284
Months covered
12

Keep nerding

Based on 285 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.