Seattle eyes another record cruise season with 2 million passengers expected in 2025 SEATTLE, WA — As Seattle kicks off the 2025 cruise season, nearly 2 million passengers are expected to set sail, marking another record-setting season in the Emerald City. Holland America’s Koningsdam was bustling with more than 2,600 passengers aboard on Saturday— each cabin sold out, and the next few sailings to Alaska already booked solid.