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Flight Reliability

WN 1627 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1627 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

79%
Arrive within 15 minutes
9 min
Average arrival delay
0.2%
Cancelled
4 min early
Median arrival delay

Based on 458 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(77 flights)
  • Tue84%(55 flights)
  • Wed91%(56 flights)
  • Thu64%(78 flights)
  • Fri79%(76 flights)
  • Sat89%(52 flights)
  • Sun78%(63 flights)
On-time by departure window
  • 3–6 AM100%(31 flights)
  • 6–9 AM90%(62 flights)
  • 9 AM–12 PM80%(78 flights)
  • 12–3 PM91%(35 flights)
  • 3–6 PM82%(81 flights)
  • 6–9 PM68%(154 flights)
  • 9 PM–12 AM56%(16 flights)
On-time trend by month
86%
May

Jun 65% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%26
July 202569%26
August 202571%35
September 202576%38
October 202563%43
November 202579%29
December 202584%31
January 202691%44
February 202686%42
March 202684%67
April 202683%41
May 202686%35
Departures on time
72%
Diverted
0%
Flights flown
457
Months covered
12

Keep nerding

Based on 458 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.