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From Seattle, Washington

Cruises from Seattle to Alaska

9 cruise lines in our guides sail from Seattle to Alaska. Here's how the season, length and lines compare, and what to know before embarkation day.

Best months
Jun to Aug
Typical length
7 nights is standard
Lines
9
Get Seattle to Alaska options
Illustrative scene of Alaska

Which lines sail from Seattle to Alaska?

Ships recently or currently deployed on this route include Brilliant Lady. Deployments change season to season, so we confirm the ship for your dates when we quote.

When to go

Alaska cruise season by month with average high and low temperatures in Juneau, Alaska (downtown)
  1. January: Few or no cruises, average high 34 degrees F
  2. February: Few or no cruises, average high 37 degrees F
  3. March: Few or no cruises, average high 39 degrees F
  4. April: Cruises run, average high 49 degrees F
  5. May: Shoulder season, average high 57 degrees F
  6. June: Best time, average high 62 degrees F
  7. July: Best time, average high 63 degrees F
  8. August: Best time, average high 62 degrees F
  9. September: Shoulder season, average high 56 degrees F
  10. October: Cruises run, average high 48 degrees F
  11. November: Few or no cruises, average high 40 degrees F
  12. December: Few or no cruises, average high 36 degrees F
  • Best time
  • Shoulder season
  • Cruises run
  • Few or none

Temperatures in Fahrenheit, long-term averages. Climate source.

The cruise season runs from late April or early May to late September or early October. June through August is warmest with the longest days. May is often drier with good wildlife viewing and lower demand. September brings fall color, northern lights chances and more rain.

Southeast Alaska is a temperate rainforest, and rain is likely on some days in any month. Fog and low cloud can hide glaciers and occasionally cancel floatplane and helicopter tours. The open-water legs, especially the Gulf of Alaska crossing on one-way cruises, can be rough. Summer highs in port are usually in the upper 50s to low 60s F, and it is colder near the glaciers.

Where you'll stop

Itineraries vary by line and length. These are the ports Alaska cruises most often visit:

Before you sail from Seattle

The Port says it is about 35 minutes from SEA to the cruise terminals and downtown hotels. Link light rail runs from the airport to downtown; from there Pier 66 is a short taxi ride (or a walk downhill with light bags), while Pier 91 needs a taxi, rideshare or shuttle. Many lines sell airport transfers. At the end of the cruise, the Port's free Port Valet service can send participating guests' luggage from the ship straight to the airport.

Each terminal has its own operator. Bell Street (Pier 66) parking is run by Republic Parking (rpnw.com/cruise-parking), and Smith Cove (Pier 91) parking is run by USP Parking (seattleportparking.com). Reserve ahead in summer, when weekend turnaround days are crowded.

Documents: Round trips from Seattle are closed-loop cruises, and foreign-flagged ships sailing from Seattle must call at a Canadian port (usually Victoria) under the Passenger Vessel Services Act. U.S. Customs and Border Protection says US citizens on a closed-loop cruise can re-enter with a birth certificate and government-issued photo ID, and Canada accepts proof of US citizenship plus photo ID for cruise visitors. Cruises from Vancouver and one-way Vancouver to Seward or Whittier sailings are not closed-loop: you will be flying or crossing into Canada, and a passport book is the practical requirement (a passport card works at land crossings but not for flights). US citizens do not need a Canadian eTA. A passport book is the safest choice for every Alaska cruise. Non-US citizens should check both US and Canadian rules. Check current requirements with your line before you sail.

More detail: our full Seattle cruise port guide and our Alaska cruise guide.

Related routes

Alaska from other ports: San Francisco, Seward, Vancouver.

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