Cruise lines make money primarily from ticket sales, customers spending aboard their ships while cruising, sales of add-on travel services such as insurance and excursions, advertising, and sponsorship deals with brands.

Contrary to popular belief, cruise lines do not make their primary profit from ticket sales; instead, the vast majority of their net income is generated through onboard revenue. While the ticket price covers basic logistics like fuel, port fees, and labor, the real profit centers are the casinos, alcohol sales, and shore excursions. In early 2026, industry data shows that "onboard and other" revenue accounts for nearly 30% to 40% of a cruise line's total revenue but carries significantly higher profit margins than the base fare. Other major money-makers include specialty dining upcharges, professional photo packages, spa treatments, and retail shopping. Many lines use "psychological pricing" by offering low base fares to get passengers on the ship, knowing that once they are in a "vacation mindset," they are more likely to spend money on "extras." Additionally, some lines make substantial commissions through "preferred partnerships" with jewelry stores and tourist shops in popular ports of call, further padding their bottom line without increasing the cost of the actual voyage.