When did cruise lines become popular?

Cruise lines began to gain popularity in the mid-20th century, particularly in the 1960s and 1970s, as air travel became more accessible and affordable. The introduction of larger, more luxurious ships and the rise of vacation packages helped to attract a broader audience. Additionally, the marketing of cruises as all-inclusive travel experiences contributed to their appeal, making them a favored choice for leisure travel. By the 1980s and 1990s, cruising had established itself as a mainstream vacation option.