If you are traveling on our Exploring Alaska’s Coastal Wilderness itinerary and you are a U.S. citizen, no passport is required. If you are traveling on our Alaska, British Columbia, and Haida Gwaii; Treasures of the Inside Passage; or Voyage to Great Bear Rainforest itineraries, U.S. citizens will need a valid passport since we travel to Canada. Passports must be valid for up to six months after the return date to the United States.