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Flight Reliability

WN 2631 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2631 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

86%
Arrive within 15 minutes
1 min early
Average arrival delay
1.1%
Cancelled
9 min early
Median arrival delay

Based on 368 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(56 flights)
  • Tue91%(56 flights)
  • Wed89%(56 flights)
  • Thu86%(56 flights)
  • Fri81%(59 flights)
  • Sat93%(40 flights)
  • Sun78%(41 flights)
On-time by departure window
  • 3–6 AM—(6 flights)
  • 6–9 AM95%(114 flights)
  • 9 AM–12 PM92%(63 flights)
  • 12–3 PM86%(103 flights)
  • 3–6 PM65%(37 flights)
  • 6–9 PM72%(18 flights)
  • 9 PM–12 AM70%(23 flights)
On-time trend by month
62%
May

Jun 96% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%28
July 202596%27
August 202585%26
September 202581%26
October 202582%54
November 202586%28
December 202582%28
January 202689%78
February 2026100%16
March 202687%23
April 202677%17
May 202662%13
Departures on time
81%
Diverted
0%
Flights flown
364
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.