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Flight Reliability

WN 1642 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1642 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

83%
Arrive within 15 minutes
2 min
Average arrival delay
1.2%
Cancelled
5 min early
Median arrival delay

Based on 415 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(64 flights)
  • Tue86%(59 flights)
  • Wed79%(61 flights)
  • Thu79%(68 flights)
  • Fri83%(66 flights)
  • Sat100%(42 flights)
  • Sun88%(49 flights)
On-time by departure window
  • 6–9 AM91%(158 flights)
  • 9 AM–12 PM85%(72 flights)
  • 12–3 PM89%(28 flights)
  • 3–6 PM81%(26 flights)
  • 6–9 PM79%(67 flights)
  • 9 PM–12 AM66%(58 flights)
On-time trend by month
84%
May

Jun 83% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%36
July 202593%30
August 202594%31
September 202597%30
October 202575%24
November 202585%26
December 202548%29
January 202694%34
February 2026100%29
March 202672%25
April 202676%54
May 202684%61
Departures on time
81%
Diverted
0.2%
Flights flown
409
Months covered
12

Keep nerding

Based on 415 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.