Alaska Cruise Guide: Inside Passage vs. Gulf of Alaska, Best Months & What to See
Everything you need to plan an Alaska cruise: route differences, best months to go, glacier viewing tips, wildlife spotting, and honest port guides for Juneau, Skagway, Ketchikan, and Glacier Bay.
Quick Answer
Alaska cruise season runs May through September. The Inside Passage is the classic round-trip route from Seattle or Vancouver; Gulf of Alaska sailings go one-way between Vancouver and Seward with open-ocean crossings. Both include glacier viewing — Glacier Bay is the crown jewel. Book May or early September for value; July for the warmest, clearest days.