On Spirit Airlines, baggage fees are generally charged per direction, not per segment. This means if you have a connecting flight (e.g., Las Vegas to Orlando with a stop in Dallas), you only pay once for that one-way journey. However, for a round-trip booking, you must pay for your bags for both the outbound and return flights, effectively "paying twice" for the total trip. In 2026, Spirit’s dynamic pricing means bag fees are significantly cheaper if paid at the time of initial booking rather than at the airport. Additionally, if you are traveling internationally and have a "self-transfer" (two separate tickets not linked by the airline), you would indeed have to pay twice. It is also important to note that Spirit's "Free Spirit" loyalty members or those in the "Savers Club" receive discounted rates, but for the average traveler, a standard carry-on or checked bag will require a separate payment for each half of a round-trip itinerary.