This is widely considered the "sweet spot" for maximum value. Booking this far out allows you to secure highly sought-after Explorer Suites and Veranda Suites before they sell out.
The best time to buy a Viking river cruise is generally . Viking operates smaller ships that fill quickly, and their pricing strategy rewards early planners with the best cabin selection and significant incentives, such as free or reduced airfare. Core Booking Windows best time to buy viking river cruise
Viking maintains a predictable cycle of promotions that can further reduce your costs: Best time to book Viking cruise? - Facebook This is widely considered the "sweet spot" for maximum value