City that shares an international airport with Seattle

TACOMA

["\"Think of a major Washington city south of Seattle.\""]

The clue "City that shares an international airport with Seattle" leads to the answer "TACOMA" through a geographical and infrastructural connection. The clue refers to the Seattle-Tacoma International Airport, often abbreviated as Sea-Tac. This airport serves both the cities of Seattle and Tacoma, which are located in the state of Washington, USA. Therefore, Tacoma is the city that shares an international airport with Seattle, making it the correct answer to the clue.