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Flight Reliability

WN 42 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 42 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

77%
Arrive within 15 minutes
7 min
Average arrival delay
1.5%
Cancelled
8 min early
Median arrival delay

Based on 202 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(14 flights)
  • Tue81%(64 flights)
  • Wed71%(69 flights)
  • Thu100%(14 flights)
  • Fri—(8 flights)
  • Sat71%(14 flights)
  • Sun87%(15 flights)
On-time by departure window
  • 3–6 PM81%(107 flights)
  • 6–9 PM73%(91 flights)
On-time trend by month
63%
May

Jul 80% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202580%10
October 202571%31
November 202589%18
December 202580%30
January 202692%39
February 202672%25
April 202675%16
May 202663%16
Departures on time
75%
Diverted
0.5%
Flights flown
198
Months covered
10

Keep nerding

Based on 202 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.