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Flight Reliability

WN 2138 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2138 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
3 min
Average arrival delay
1.1%
Cancelled
5 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(52 flights)
  • Tue81%(42 flights)
  • Wed86%(43 flights)
  • Thu83%(52 flights)
  • Fri77%(56 flights)
  • Sat89%(35 flights)
  • Sun78%(73 flights)
On-time by departure window
  • 3–6 AM93%(87 flights)
  • 6–9 AM93%(61 flights)
  • 9 AM–12 PM78%(133 flights)
  • 12–3 PM61%(18 flights)
  • 3–6 PM74%(31 flights)
  • 6–9 PM70%(23 flights)
On-time trend by month
90%
May

Jun 97% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%34
July 202580%35
August 202578%23
September 202571%21
October 202577%31
November 202572%25
December 202572%29
January 202689%28
February 202674%35
March 202694%31
April 202690%30
May 202690%31
Departures on time
79%
Diverted
0%
Flights flown
353
Months covered
12

Keep nerding

Based on 357 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.