How do I return a rental car to the SeaTac Rental Car Facility using local surface streets to avoid airport terminal traffic?

To avoid the heavily congested standard airport terminal traffic loops on SR 518 and SR 509 when returning your vehicle to the SeaTac Rental Car Facility, local renters should utilize the granular surface street navigation route. Instead of following the standard airport signage which directs you into the main terminal arrivals and departures loops, approach the facility via International Boulevard (Pacific Highway S). If you are traveling from the north, turn west onto South 170th St, then head south on Air Cargo Road. This route runs parallel to the airport's western perimeter and completely bypasses the primary terminal gridlock. From Air Cargo Road, make a right turn onto South 160th St, heading westbound directly toward the facility entrance. If approaching from the south via International Boulevard, simply turn west onto South 160th St at the intersection near the 3150 S 160th St address. Using these specific surface street transitions can save you approximately 15 to 25 minutes of idle waiting time during peak travel hours. The dedicated return lane entrance is clearly marked on South 160th St just past the intersection with 24th Ave S. This local pathway is highly recommended for area residents who already know the geography and want a seamless, express return experience without getting stuck behind out-of-town drivers navigating the terminal drop-off and pick-up curbs.