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Flight Reliability

WN 901 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 901 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

78%
Arrive within 15 minutes
7 min
Average arrival delay
0.3%
Cancelled
0 min
Median arrival delay

Based on 333 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(54 flights)
  • Tue74%(42 flights)
  • Wed77%(35 flights)
  • Thu84%(49 flights)
  • Fri85%(58 flights)
  • Sat84%(38 flights)
  • Sun62%(55 flights)
On-time by departure window
  • 6–9 AM91%(65 flights)
  • 9 AM–12 PM85%(41 flights)
  • 12–3 PM84%(77 flights)
  • 3–6 PM65%(93 flights)
  • 6–9 PM73%(55 flights)
On-time trend by month
83%
May

Jun 73% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%33
July 202561%31
August 202597%31
September 2025100%30
October 202567%48
November 202573%22
December 202567%33
January 202685%13
February 202678%18
March 202679%28
April 202695%21
May 202683%23
Departures on time
70%
Diverted
0.3%
Flights flown
331
Months covered
12

Keep nerding

Based on 333 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.