Alaska Cruise Guide: Routes, Glaciers, Cruisetours and When to Go

An Alaska cruise is one of the best ways to see a state that is mostly roadless along its coast. In a week you can watch a glacier calve, look for whales from your balcony and walk the streets of gold rush towns. The planning decisions are different from a Caribbean cruise, though: the route you pick changes what you see, how you fly, and whether you can add a land trip to Denali.

The three main route types

Route	Starts and ends	Typical length	Highlights	Trade-offs
Round trip from Seattle	Seattle	7 nights	Easy US flights, Inside Passage ports	Must call in Canada; more time at sea getting north
Round trip from Vancouver	Vancouver	7 nights	Scenic Inside Passage sailing from the start	Fly into Canada; passport needed for the flight
One-way Gulf of Alaska	Vancouver and Seward or Whittier	7 nights	Covers more of the coast, often Hubbard Glacier, easy to add Denali	Open-jaw flights; passport needed

Round trip from Seattle

Seattle round trips are popular because flights are easy and there’s no border crossing at the start. Ships typically visit three Southeast Alaska ports such as Juneau, Ketchikan and Skagway, plus a glacier day, then call at a Canadian port, usually Victoria, British Columbia, on the way back.

Why the Canada stop? Most large cruise ships are registered outside the US. The Passenger Vessel Services Act generally bars foreign-flagged ships from carrying passengers between US ports. A round trip from the same US port is allowed if the ship visits a foreign port, so a Canadian call keeps the itinerary legal. (During the pandemic, Congress temporarily waived the requirement for Alaska sailings while Canada’s ports were closed; that waiver expired in 2022.)

Round trip from Vancouver

Vancouver round trips sail through the Inside Passage, a sheltered route between islands along the British Columbia coast, from the first day. Because the trip starts in Canada, the US cabotage rule doesn’t shape the itinerary in the same way. You’ll fly into Canada, so bring a passport.

One-way Gulf of Alaska

One-way cruises run between Vancouver and the Anchorage-area ports of Seward or Whittier, in either direction. They cover more distance north, so they often include Hubbard Glacier or College Fjord, and they end close to Anchorage and the road and rail routes into the interior.

The trade-off is logistics: you’ll fly into one city and out of another, and since the trip begins or ends in Canada, you’ll need a passport book. See our passport guide for details.

Cruisetours: adding Denali

A cruisetour pairs a cruise, usually one-way, with a land program arranged by the cruise line. A typical route runs from Seward or Whittier through Anchorage to Denali National Park, sometimes continuing to Fairbanks or the Yukon, using trains, motorcoaches and lodges.

Princess and Holland America are especially known for Alaska cruisetours. Other lines offer land extensions or partner programs.

Things to know:

Cruisetours add several days, often three to six, to the trip.
Denali’s famous mountain is frequently hidden by cloud, so treat a clear view as a bonus.
Wildlife viewing in Denali is usually by bus along the park road. Check current road access with the park, since conditions can affect how far buses travel.

Glaciers: what ships actually visit

Most seven-night Alaska cruises include one dedicated glacier-viewing day. Which glacier depends on the itinerary.

Glacier Bay National Park

The National Park Service limits cruise ship entries to Glacier Bay. The daily maximum is two ships, and the park sets seasonal quotas for the peak summer months and the May and September shoulder season. Lines compete for access through concession contracts. Because entries are capped, only some sailings include Glacier Bay, so check the itinerary if it’s a priority. Park rangers typically come aboard to narrate the day.

Hubbard Glacier

Hubbard Glacier reaches the sea at Disenchantment Bay, near Yakutat, and stretches about 76 miles (122 km) from its source. Unlike many Alaska glaciers, its ice margin has been advancing for about a century. It’s a common feature of one-way Gulf of Alaska cruises and some longer round trips. Ice and fog decide how close ships can get.

Tracy Arm and Endicott Arm

Tracy Arm is a narrow fjord about 45 miles south of Juneau ending at the twin Sawyer Glaciers. Its neighbor, Endicott Arm, is a similar deep, narrow fjord. Ice in the fjords can range from small chunks to pieces as large as a building, and conditions decide how far a ship can go. In August 2025, a major rockslide in Tracy Arm generated a large tsunami in the fjord. Lines choose scenic routes based on current conditions, so treat any glacier on an itinerary as planned rather than guaranteed.

Other scenic cruising

Depending on the route, you might also see College Fjord or the glaciers near Skagway and Juneau from shore, including on flightseeing or helicopter excursions.

When to go: Alaska by month

The cruise season runs from roughly May through September. Here’s what to expect in Juneau, a typical Southeast Alaska port, using 1991 to 2020 climate normals for Juneau International Airport.

Month	Avg high (F)	Avg low (F)	Avg precipitation (in)	Days with precipitation
May	57.6	40.3	3.51	16.1
June	62.4	46.8	3.82	16.7
July	64.0	50.1	5.14	18.5
August	62.9	49.1	6.41	19.4
September	56.1	44.1	9.15	22.3

Takeaways:

Rain is normal in Southeast Alaska throughout the season. Showers are often light, but bring a waterproof jacket regardless of month.
May and June tend to be drier, with long daylight hours. May is quieter and often a better value.
July and August are the warmest and busiest months, coinciding with US school vacations.
September is the wettest month in Juneau, but it’s quieter, and fall color and late-season wildlife can be rewarding.

Ports you’re likely to visit

Juneau: Alaska’s capital, reachable only by air or sea, with whale-watching tours and the Mendenhall Glacier nearby.
Ketchikan: Totem poles, Creek Street and floatplane trips to Misty Fjords.
Skagway: Gold rush history and the White Pass railway into the mountains.
Sitka: Russian and Tlingit heritage, on some itineraries.
Icy Strait Point: A Native-owned destination near Hoonah, known for whale watching, on some itineraries.
Victoria, British Columbia: Often the Canadian stop on Seattle round trips, sometimes for an evening call.

Choosing a cabin and packing

A balcony is more useful in Alaska than almost anywhere else, because so much of the trip is scenic cruising. If a balcony isn’t in the budget, an ocean view cabin and a good spot on deck still work well. See our cabin types guide for the pros and cons.

Pack layers: a waterproof shell, a warm fleece or light down jacket, a hat and gloves for glacier days, comfortable waterproof walking shoes and binoculars. Days in port can range from cool and wet to warm and sunny.

Booking tips

Book early for cabins with balconies and for the most popular summer weeks.
Pre-book popular excursions like whale watching, flightseeing and the White Pass railway.
For one-way cruises, plan flights early, since open-jaw routes can be pricey closer to departure.
Add a night before the cruise. Seattle and Vancouver are both worth a day.
Consider travel insurance, especially for cruisetours with many moving parts. See our cruise travel insurance guide.

Which lines sail Alaska

Most major lines sail Alaska in summer, including Princess, Holland America, Royal Caribbean, Norwegian, Celebrity, and Carnival, plus luxury and expedition lines on smaller ships. If you’re unsure which suits you, our guide to choosing a cruise line can help.

Plan your Alaska trip with us

Alaska routes involve more trade-offs than most cruises: round trip or one-way, which glacier, whether to add Denali. Tell us your dates, who’s traveling and what you most want to see on our cruise finder, and a specialist will reply with itineraries that match, including which glacier each one visits and how the flights would work.

Quick answers

When is the Alaska cruise season?

The main season runs from May through September, with a few sailings at the very start or end of that window on some lines. June, July and August are the warmest and busiest months, while May and September tend to be quieter, cooler and, in September especially, wetter.

Why do Alaska cruises from Seattle stop in Canada?

Most large cruise ships are registered outside the US. Under the Passenger Vessel Services Act, a foreign-flagged ship can't carry passengers between US ports, but it can run a round trip from the same US port if it visits a foreign port. That's why Seattle round trips call at a Canadian port, usually Victoria, British Columbia.

Do all Alaska cruises go to Glacier Bay?

No. The National Park Service limits cruise ship entries to Glacier Bay, with no more than two ships per day and seasonal quotas, so only some sailings include it. Other itineraries feature Hubbard Glacier, Tracy Arm or Endicott Arm instead. Check the specific itinerary if Glacier Bay matters to you.

Is a one-way or round-trip Alaska cruise better?

Round trips from Seattle or Vancouver are simpler and usually easier on airfare. One-way Gulf of Alaska cruises between Vancouver and Seward or Whittier cover more ground, often include Hubbard Glacier, and make it easy to add time in Denali, but need open-jaw flights and a passport.

What is an Alaska cruisetour?

A cruisetour combines a cruise with a guided land trip, usually through the Anchorage area to Denali National Park and sometimes Fairbanks or the Yukon. The land portion uses trains, motorcoaches and lodges arranged by the cruise line, and is typically paired with a one-way cruise.

Sources and fact-checking

We write our own guides and check hard facts like fleet sizes, ship specs and published fees against these sources. Cruise lines change things often, so we re-confirm details in every quote. Spotted something out of date? Tell us.