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Flight Reliability

WN 1888 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1888 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

74%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
3 min early
Median arrival delay

Based on 370 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(56 flights)
  • Tue89%(55 flights)
  • Wed72%(53 flights)
  • Thu75%(51 flights)
  • Fri67%(54 flights)
  • Sat73%(51 flights)
  • Sun70%(47 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM100%(12 flights)
  • 9 AM–12 PM86%(55 flights)
  • 12–3 PM73%(45 flights)
  • 3–6 PM71%(138 flights)
  • 6–9 PM64%(39 flights)
  • 9 PM–12 AM71%(76 flights)
On-time trend by month
81%
May

Jun 80% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%25
July 202550%22
August 202538%29
September 202567%30
October 202592%26
November 202569%36
December 202579%48
January 202691%32
February 202678%27
March 202674%31
April 202680%30
May 202681%31
Departures on time
65%
Diverted
0%
Flights flown
367
Months covered
12

Keep nerding

Based on 370 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.