Her 2017 calendar ended with two-week voyages along the Western South American coast to Valparaiso, Chile.

In May 2018 the ship repositioned to Port Canaveral to operate cruises to Havana with Key West Florida, and to the Bahamas to either Freeport or Nassau and Great Stirrup Cay.

[3] In June 2019, it was announced that, following the travel ban preventing U.S. cruise ships from visiting Cuba, Norwegian Sun would no longer be offering their "open bar" service and would instead transition to the traditional way for charging for onboard drinks.

[4][failed verification] Beginning in 2026, Norwegian Sun will no longer sail from Seattle to Alaska during the summer cruise season in the northern hemisphere.

[5] On June 25, 2022, while cruising near Alaska's Hubbard Glacier, the ship collided with a small iceberg known as a "growler".