Southwest Airlines is recognised as one of the cheapest airline bases in the USA because of the number of perks and benefits it offers to passengers. Moreover, one of them is Southwest Airlines $29 Flights deals, which the airline offers for a limited time. As these deals are for a short period, securing them early is a key factor. Furthermore, the best time to get $29 flight deals includes booking during the midweek, flying during off-seasons, skipping holidays and weekends, keeping an eye on sales, and so on.