Southwest Airlines offers numerous ways for passengers to book business class seats. One can book by visiting Southwest Airlines official website or by speaking to a live person at customer service or the last minute from the airport. Procedure Start by entering the departure and arrival cities and dates. Select the business select fare option, and after choosing your flight, proceed to enter passenger details and payment information. Once completed, you will receive a confirmation email. Moreover, by making a reservation with Southwest Business Select, one could avail of benefits including priority boarding, dedicated customer support, complimentary drinks, the option to earn miles, and many more.