Inside Passage vs. Gulf of Alaska: Which Cruise Route Should You Pick?

Every Alaska cruise is one of two routes, and picking between them settles half the decisions that follow: which ports you see, which glacier you get, whether you can add Denali, and how much you spend on flights. Here's the difference in plain terms, and how to choose.

The short version

An Inside Passage cruise is a seven-night round trip from Seattle or Vancouver. You sail the protected channels of Southeast Alaska, stop in Juneau, Skagway, and Ketchikan, and spend a day at a glacier, usually Glacier Bay, Tracy Arm, or Endicott Arm. You fly into and out of the same city.

A Gulf of Alaska cruise is one-way, seven nights between Vancouver and Seward or Whittier, the two cruise ports for Anchorage. You still get Juneau, Skagway, and Ketchikan, but the ship keeps going north across the open Gulf to Hubbard Glacier and College Fjord, and you fly home from Anchorage instead of where you started.

If you want the simplest, most affordable first Alaska cruise, take the Inside Passage. If you want Hubbard Glacier, the Gulf crossing, or any time in Denali and the interior, take the one-way Gulf route.

What you actually see on each

Inside Passage

The route stays in sheltered water almost the whole week, which makes it the smoother of the two. You see the fjords and forested islands of Southeast Alaska up close, and the three big gold-rush and fishing towns get full port days. The glacier day varies by ship: Glacier Bay is the prize, because only a limited number of ships are permitted in each day, and it delivers several tidewater glaciers plus a park ranger on board narrating. Tracy Arm and Endicott Arm are beautiful but ice can turn the ship around, so treat them as a bonus rather than a guarantee.

Gulf of Alaska

You trade one Inside Passage sea day for a crossing of the open Gulf of Alaska, which can be rougher for a night, and in exchange you get Hubbard Glacier, the largest tidewater glacier face you'll see from a cruise ship, and often College Fjord, a wall of glaciers named after Ivy League schools. Because the sailing ends in Seward or Whittier, you're a train or bus ride from Anchorage, and from there the whole interior opens up. This is the only route that combines with a Denali cruisetour without a lot of extra flying.

Cost and logistics

The cruise fares themselves are similar. The differences show up around the edges:

• Flights. Round-trip Seattle is the cheapest and easiest from the Midwest, with nonstop options from several airports. A one-way itinerary means flying into Vancouver and out of Anchorage, or the reverse, which costs more and takes longer.
• Passport. Bring a valid passport for either route. Every Alaska cruise calls at a Canadian port, and a passport is the document that works if you have a medical emergency or miss the ship.
• Time. Inside Passage is a clean week. Gulf of Alaska is a week plus a travel day on each end, and if you add land it becomes ten to fourteen days.
• Seasickness. If anyone in your group is prone to it, the Inside Passage's protected water is the safer bet. The Gulf crossing is one night and most people are fine, but it is open ocean.

Which lines sail which route

Nearly every line sails both, but their strengths differ. The big Seattle round trips are Norwegian, Royal Caribbean, Carnival, Celebrity, and Holland America. Princess and Holland America built their Alaska programs around the one-way Gulf route because it feeds their Denali lodges and rail cars, so if you're leaning toward a cruisetour, start there. Small-ship lines like Windstar, UnCruise, and Lindblad do neither; they sail shorter routes within Southeast Alaska from Juneau, Sitka, or Ketchikan.

How to decide

• First Alaska cruise, one week, keep it simple: Inside Passage round trip from Seattle.
• Denali is on the list: Gulf of Alaska one-way, paired with a cruisetour. Read when it's worth adding Denali.
• Hubbard Glacier or College Fjord specifically: Gulf of Alaska.
• Glacier Bay specifically: Either route can include it. Check the itinerary line by line, because not every sailing does.
• Traveling with kids: Inside Passage from Seattle. The newest family ships sail that route, and the simpler flights matter more with a group.

Still not sure? Take the two-minute Alaska cruise quiz and we'll sort you into one of the five kinds of Alaska cruise, with the route, timing, and cabin advice to match. And for when to go, see the best time to visit Alaska.

Frequently Asked Questions

Is the Inside Passage or Gulf of Alaska cruise better?
Inside Passage is the better first cruise: smoother water, simpler flights, and the same three main ports. Gulf of Alaska is better if you want Hubbard Glacier or plan to add Denali, because it ends near Anchorage.

Do Inside Passage cruises go to Glacier Bay?
Some do and some don't. Glacier Bay permits are limited, so check the specific itinerary. Sailings that skip it usually visit Tracy Arm or Endicott Arm instead.

Is the Gulf of Alaska crossing rough?
It can be, for roughly one night. Most passengers are fine, but if seasickness is a concern, the Inside Passage's protected waters are the safer choice.

Can you do a Denali cruisetour with an Inside Passage cruise?
Technically yes, but it means a separate flight from Seattle or Vancouver to Anchorage. The one-way Gulf of Alaska route is built for it and is the way nearly everyone does it.