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Flight Reliability

WN 998 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 998 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
14 min
Average arrival delay
0.3%
Cancelled
1 min
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(64 flights)
  • Tue76%(55 flights)
  • Wed85%(53 flights)
  • Thu63%(62 flights)
  • Fri55%(67 flights)
  • Sat85%(40 flights)
  • Sun74%(57 flights)
On-time by departure window
  • 3–6 AM90%(81 flights)
  • 6–9 AM—(9 flights)
  • 9 AM–12 PM—(9 flights)
  • 12–3 PM80%(50 flights)
  • 3–6 PM62%(156 flights)
  • 6–9 PM45%(42 flights)
  • 9 PM–12 AM71%(51 flights)
On-time trend by month
56%
May

Jun 61% → May 56% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%28
July 202564%28
August 202582%33
September 202585%34
October 202533%30
November 202575%32
December 202575%40
January 202697%32
February 202675%32
March 202672%32
April 202671%38
May 202656%39
Departures on time
64%
Diverted
0.3%
Flights flown
398
Months covered
12

Keep nerding

Based on 400 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.