The main Alaskan cruise routes visit Southeast Alaska's Inside Passage, a narrow waterway between the mainland and islands that runs roughly 500 miles from Seattle or Vancouver down to Ketchikan

Most Alaskan cruises depart from Seattle, Washington or Vancouver, British Columbia and follow one of two patterns: a seven-day round trip that leaves and returns to the same port, or a one-way journey that ends in a different city. The Inside Passage route is the standard because the protected waters make for calmer sailing and the ports along it—Ketchikan, Juneau, Sitka, and Glacier Bay—are where the glaciers, wildlife, and Native Alaskan culture that draw cruise passengers actually are located.

A smaller number of cruises visit the Gulf of Alaska, which includes ports like Seward and Whittier on the mainland side, and Valdez. These routes tend to be longer and rougher water, and they're often combined with land tours to Denali National Park or the Kenai Peninsula. The choice between Inside Passage and Gulf of Alaska depends on what you want to see—glaciers and coastal towns versus mountains and wildlife viewing inland.

Key Takeaways

  • The Inside Passage is the most common Alaskan cruise route, stopping at Ketchikan, Juneau, Sitka, and Glacier Bay National Park over seven days.
  • Cruises depart from Seattle or Vancouver and either return to the same port or end in a different city, which affects the total length and cost.
  • Gulf of Alaska routes visit Seward, Whittier, and Valdez and often include land-based tours to Denali or the Kenai Peninsula.
  • Each port has distinct attractions: Ketchikan for totem poles and Native culture, Juneau for whale watching, Sitka for Russian colonial history, and Glacier Bay for tidewater glaciers.
  • Cruise lines operate these routes from May through September, with the busiest travel in July and August.

Ketchikan: Totem poles and Native Alaskan art

Ketchikan is the southernmost port on the Inside Passage and usually the first stop for cruises heading north. The town is known for its collection of standing totem poles—more than anywhere else in Alaska—and for the Tlingit, Haida, and Tsimshian Native peoples whose art and culture dominate the waterfront. Most cruise passengers spend four to six hours here and visit the Totem Heritage Center or walk Creek Street, a boardwalk of historic buildings built on stilts over the water.

The town itself is small (around 8,000 people) and walkable from the cruise dock. Salmon fishing is still a major industry, and you'll see fishing boats and canneries alongside tourist shops. If you want to see bears or take a floatplane tour, those excursions depart from Ketchikan, though they cost extra and book up quickly.

Juneau: Whale watching and the state capital

Juneau is Alaska's capital and sits at the mouth of Gastineau Channel, surrounded by mountains and accessible only by boat or plane—there are no roads in or out. The cruise dock is within walking distance of downtown, where you'll find shops, restaurants, and the Alaska State Museum. Most passengers, though, book shore excursions to see whales, visit the Mendenhall Glacier, or take a helicopter tour.

Humpback whales are common in the waters around Juneau from May through September, and whale-watching tours depart several times a day. The Mendenhall Glacier is about 13 miles from town and requires a bus ride or rental car to reach, but it's one of the few tidewater glaciers in Southeast Alaska where you can see the ice meeting the water. Juneau is typically a port day with six to eight hours ashore.

Sitka: Russian colonial history and art galleries

Sitka sits on Baranof Island and has a different feel from the other Inside Passage ports—it was the capital of Russian Alaska in the 1800s, and that history is visible in the Russian Orthodox Cathedral and the old Russian cemetery. The town is also home to the Sheldon Jackson Museum, which holds one of the largest collections of Native Alaskan artifacts in the state.

Sitka is less touristy than Ketchikan or Juneau, and the cruise dock is about a mile from downtown, so most passengers either walk or take a shuttle. The town has good restaurants and galleries, and the surrounding forests and beaches are accessible by car rental or guided tour. A typical port stop is six to eight hours.

Glacier Bay National Park: Tidewater glaciers and wildlife

Glacier Bay is not a town—it's a national park about 65 miles north of Juneau where cruise ships navigate among tidewater glaciers, waterfalls, and wildlife. Ships enter the bay slowly and spend the day cruising past glaciers like Margerie and Johns Hopkins, where you can watch ice calve (break off) into the water. Whales, sea otters, bears, and eagles are common sightings.

Because Glacier Bay is a protected marine sanctuary, only a limited number of cruise ships are allowed to enter each day, and the park charges a fee per passenger. Ships do not dock at Glacier Bay—you stay aboard and view the scenery from the deck. This is a full-day experience, and it's often the highlight of an Inside Passage cruise. Not all cruises include Glacier Bay; some substitute it with other ports like Haines or Skagway.

Haines and Skagway: Gold rush history and mountain scenery

Haines and Skagway are two smaller ports at the northern end of the Inside Passage, both with roots in the Klondike Gold Rush of the 1890s. Skagway is the more touristy of the two, with restored gold-rush-era buildings, a narrow-gauge railroad, and shops lining the main street. Haines is quieter and sits at the mouth of the Chilkat River, where bald eagles gather in large numbers in the fall.

Not all cruises stop at both ports—some include one or the other, or substitute them for Glacier Bay or Sitka depending on the itinerary. A typical port stop is four to six hours. Skagway's dock is within walking distance of downtown, while Haines requires a shuttle or rental car.

Gulf of Alaska routes: Seward, Whittier, and Valdez

Gulf of Alaska cruises are longer and rougher than Inside Passage routes because they cross open ocean rather than protected waterways. These cruises typically visit Seward or Whittier (both on the Kenai Peninsula), Valdez (on Prince William Sound), and sometimes Glacier Bay. The advantage is that you see different glaciers—Hubbard Glacier near Valdez is one of the largest in North America—and the scenery is more dramatic.

Gulf of Alaska cruises are often combined with land tours. For example, a cruise might end in Seward, and then you take a bus or train to Denali National Park for a few days of land-based touring. These packages are longer (ten to fourteen days) and more expensive than Inside Passage cruises. The trade-off is that you see more of Alaska's interior and have more time in one place rather than moving to a new port every day.

Frequently Asked Questions

What time of year do Alaskan cruises run?

Alaskan cruises operate from May through September, with the peak season in July and August. May and September have fewer crowds and lower prices, but some wildlife is less active and the weather is cooler. June is a good middle ground—the weather is mild, wildlife is visible, and it's less crowded than July and August.

How much time do you spend in each port?

Most ports have four to eight hours of dock time, which is enough to walk around town, visit a museum, or take a short shore excursion. Glacier Bay is a full day at sea with no dock time. The exact timing depends on the cruise line and itinerary, so check your ticket before booking shore excursions.

Can you see glaciers from the ship without taking an excursion?

Yes. Glacier Bay is viewed from the deck as the ship cruises through the park. Mendenhall Glacier near Juneau requires a bus or car ride, but other glaciers are visible from the water. Many ships also sail past glaciers while traveling between ports, and crew members announce when they're approaching one.

Do you need to book shore excursions in advance?

Popular excursions like whale watching and helicopter tours book up weeks in advance, especially in July and August. You can book through the cruise line before you board or wait until you're on the ship, but availability may be limited. Less popular activities like walking tours or museum visits usually have availability even if you book onboard.

What's the difference between a round-trip and one-way cruise?

A round-trip cruise departs and returns to the same port (usually Seattle or Vancouver) and takes seven days. A one-way cruise goes from one port to another—for example, Seattle to Juneau or Vancouver to Seward—and is often longer because the ship doesn't have to backtrack. One-way cruises are more expensive but let you see more of Alaska.