Southwest Airlines is The world's largest low-cost carrier Airlines more than 100 destinations with flights to 41 US states, Checked baggage / hold luggage policy, checked pieces of baggage per ticketed Customer allowed, Baggage Screening and Identification, Baggage Allowance, Excess Baggage, Liability, Claims and more.

https://www.airfleetrating.com/baggage/southwest-baggage-policy/