Why Are Some Alaska Cruises One-Way?

Many Alaska cruises are one-way because the route between Vancouver (or Seattle) and the Gulf of Alaska ports of Seward and Whittier lets a ship sail farther north and visit glaciers a round-trip itinerary can’t easily reach. These sailings also link neatly to inland land tours, so passengers can keep traveling toward Denali after they disembark.

Round-trip vs one-way

There are two basic shapes for an Alaska cruise:

• Round-trip Inside Passage sailings leave from Seattle or Vancouver and return to the same port. They stay in the sheltered coastal waters and hit towns like Juneau, Skagway, and Ketchikan.
• One-way Gulf of Alaska sailings run between a southern port and Seward or Whittier (the cruise ports for Anchorage), crossing the open Gulf so the ship can reach northern glaciers such as those in College Fjord and the Hubbard Glacier area.

Reaching more glaciers

The biggest reason to go one-way is scenery. By sailing the full length up to the Gulf, the ship can cruise deeper into glacier country than a round-trip vessel that has to turn around and sail back south. Glacier Bay National Park, College Fjord, and Hubbard Glacier are highlights you’re far more likely to see on a one-way northbound or southbound route.

Connecting to land tours

One-way cruises were designed to pair with “cruisetours.” Disembarking at Seward or Whittier puts you a short transfer from Anchorage and the rail line inland, so you can continue to Denali National Park and the Alaskan interior. That’s the natural way to combine a cruise with seeing more of the state.

The trade-off

One-way cruises usually mean booking two different airports — flying into one city and out of another — which can raise airfare and add planning. If you want simple logistics, a round-trip Inside Passage cruise is easier; if you want maximum scenery and a Denali add-on, one-way is the way to go.

Related guides

Part of our Cruise Destinations & Ports hub.