Lyft - Get info and download the app at lyft.com.
A taxi from SeaTac to the Bellevue Hyatt Regency will run between $45-$55 one-way. If you are traveling with 3-4 people, this can be a very economical way to get to Bellevue.
STITA Taxi - Call (206) 246-9999. You may reserve a taxi online by visiting stitataxi.com or download their app from the app store “Stita Taxi”.
Yellow Cab - Call (206) 622-6500
For those with an adventurous spirit (and the gift of advance preparation), you can easily get from the SeaTac Airport to the Bellevue Hyatt Regency using public transportation. Please keep in mind that this will not be the most efficient route…but it may be the most fun! The trip will involve hopping on the new Link Light Rail, making a transfer and then catching a Metro bus to Bellevue. The trip should cost about $5 one way and will make you feel that you’ve contributed to the health of the planet. The best tool you can use to find your way is the “Trip Planner” on the King County Metro website: metro.kingcounty.gov. Under the “Ride Metro” tab, click “Plan a Trip.” You will be able to input the date, time and destination of your trip and several itinerary options will appear.