What is there to do in Seattle for 4 hours?
4 Hours in Seattle
How much is taxi from Seattle airport to downtown?
Traditional Taxi Cabs
Cab fare from Sea-Tac International Airport to downtown Seattle runs $42-50 one-way.
Can you leave the airport during a layover?
Yes, you can leave the airport during domestic layovers. For instance, if you're a US citizen and have a layover within the country, it is legal and safe to leave the airport. Be aware that you'll probably be getting two boarding passes if the domestic layover is more than an hour.
Unless you're planning on taking a lot of day trips out of the city, you don't need your own car to enjoy a vacation in Seattle. There is also a good bus system, a streetcar that connects downtown to South Lake Union, and a light-rail system that connects Seattle to the airport and makes some stops along the way.