Is there anywhere in the Seattle area where I can buy dry ice?

Here are two places in Seattle that sell dry ice:

Airgas Dry Ice
2414 Sw Andover St
Seattle, WA
(206) 767-6671

American Dry Ice Corporation
672 S Orcas St
Seattle, WA
(206) 767-6847

Or, if Kent is convenient to you, Airgas has a second location there.

Airgas Dry Ice
6643 S 216th St
Kent, WA
(253) 854-6666

I hope this is helpful!!

Yes, check the seafood dept at any major grocery store.

I got some dry ice at a local QFC, they do check your ID to make sure your 18 though..

Try looking in the yellow pages for ice houses, also look for dry ice. If all else fails, call your gas and electric company. They have sources to help their customers during power failures so they do not spoil food in home freezers.

Most grocers will have dry ice, but not advertise it, if you ask at the meat department or the seafood department. For that matter, you can also get it at places like the Pike Place Market, though I've only known it offered with purchases, not tried to purchase it separately. Albertson's and QFC def have it as I've gotten it at both grocers.