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Flight Reliability

WN 1997 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1997 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

75%
Arrive within 15 minutes
9 min
Average arrival delay
0.9%
Cancelled
1 min
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(52 flights)
  • Tue76%(42 flights)
  • Wed86%(43 flights)
  • Thu76%(50 flights)
  • Fri80%(51 flights)
  • Sat70%(50 flights)
  • Sun71%(45 flights)
On-time by departure window
  • 3–6 AM94%(35 flights)
  • 6–9 AM92%(24 flights)
  • 9 AM–12 PM86%(63 flights)
  • 12–3 PM78%(40 flights)
  • 3–6 PM79%(68 flights)
  • 6–9 PM54%(96 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
55%
May

Jun 50% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%34
July 202569%35
August 202575%16
September 2025100%13
October 202563%30
November 202586%29
December 202597%31
January 202690%30
February 202684%25
March 202679%29
April 202667%30
May 202655%31
Departures on time
70%
Diverted
0%
Flights flown
333
Months covered
12

Keep nerding

Based on 336 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.