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Flight Reliability

WN 3099 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3099 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

72%
Arrive within 15 minutes
11 min
Average arrival delay
0.5%
Cancelled
1 min
Median arrival delay

Based on 217 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(31 flights)
  • Tue77%(30 flights)
  • Wed70%(30 flights)
  • Thu75%(28 flights)
  • Fri77%(30 flights)
  • Sat60%(30 flights)
  • Sun68%(37 flights)
On-time by departure window
  • 6–9 AM85%(13 flights)
  • 9 AM–12 PM80%(61 flights)
  • 12–3 PM83%(18 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM69%(97 flights)
  • 9 PM–12 AM48%(23 flights)
On-time trend by month
26%
May

Nov 96% → May 26% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202596%27
December 202581%31
January 202684%31
February 202682%28
March 202674%31
April 202667%30
May 202626%31
Departures on time
69%
Diverted
0%
Flights flown
216
Months covered
10

Keep nerding

Based on 217 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.