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Flight Reliability

WN 148 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 148 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

85%
Arrive within 15 minutes
2 min
Average arrival delay
0%
Cancelled
4 min early
Median arrival delay

Based on 368 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(48 flights)
  • Tue91%(53 flights)
  • Wed85%(52 flights)
  • Thu81%(47 flights)
  • Fri81%(47 flights)
  • Sat89%(70 flights)
  • Sun88%(50 flights)
On-time by departure window
  • 3–6 AM100%(25 flights)
  • 6–9 AM96%(22 flights)
  • 9 AM–12 PM89%(96 flights)
  • 12–3 PM81%(122 flights)
  • 3–6 PM83%(80 flights)
  • 6–9 PM—(4 flights)
  • 9 PM–12 AM61%(18 flights)
On-time trend by month
91%
May

Jun 92% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%24
July 202595%21
August 202587%30
September 202580%30
October 202574%72
November 202574%31
December 202590%31
January 202683%30
February 202687%23
March 2026100%29
April 202683%23
May 202691%23
Departures on time
78%
Diverted
0.3%
Flights flown
367
Months covered
12

Keep nerding

Based on 368 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.