How do I return my SIXT vehicle at SeaTac and handle after-hours key drop-off?
Verified: 2026-09-11
At a glance
Drive to 3150 S 160th St, park on Level 3 for SIXT returns, and use the key drop box for after-hours service.
What to know
Topic-specific long guide --- no rental shuttle/CFC boilerplate
Machine-readable