Pre-booked parking is sold out at Seattle-Tacoma International Airport for Thanksgiving and Christmas, meaning demand is high for spots. Drive-up parking may be available, according to Sea-Tac's website.  However, it is not guaranteed around Thanksgiving and Christmas- meaning those who were looking to drive to the airport may want to consider alternative means of transportation. Sea-Tac is expecting 95% of its pre-pandemic holiday travel, and the airport is expecting long lines throughout the holiday season. Here are some alternatives suggested by the airport to parking at Sea-Tac: https://www.king5.com/article/travel/pre-booked-parking-sold-out-sea-tac-airport-thanksgiving/281-8fe4f699-f613-478b-97d8-b039b1f0443e