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Flight Reliability

WN 3655 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3655 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

80%
Arrive within 15 minutes
7 min
Average arrival delay
0.8%
Cancelled
3 min early
Median arrival delay

Based on 255 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(29 flights)
  • Tue77%(34 flights)
  • Wed78%(32 flights)
  • Thu97%(29 flights)
  • Fri87%(38 flights)
  • Sat77%(43 flights)
  • Sun67%(48 flights)
On-time by departure window
  • 6–9 AM93%(110 flights)
  • 9 AM–12 PM79%(58 flights)
  • 12–3 PM69%(35 flights)
  • 3–6 PM77%(22 flights)
  • 6–9 PM43%(21 flights)
  • 9 PM–12 AM—(7 flights)
On-time trend by month
83%
May

Jun 39% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202539%18
July 202556%18
August 202595%37
September 202597%39
October 202590%20
November 202575%32
December 202567%21
February 2026100%10
March 202681%16
April 202679%19
May 202683%18
Departures on time
77%
Diverted
0%
Flights flown
253
Months covered
12

Keep nerding

Based on 255 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.