To contact NCL customer service by phone, call their general customer service number for North America, (+1-855-732-4023 Or [$]+1-808-900-8011[$]), or use the Flight Assistance Hotline at (+1-855-732-4023 Or [$]+1-808-900-8011[$]) for flight-related issues. For pre-cruise inquiries outside North America, you may need to use a different international number, such as 00800 0310 21 21 for European guests.