How do I navigate to the SeaTac Rental Car Facility from major highways?

To ensure a smooth arrival at the SeaTac Rental Car Facility, follow these highway-specific driving routes. If you're coming from I-5 North, take exit 154B for SR 518 West towards Sea-Tac Airport. Continue on SR 518 West for approximately 4. 5 miles, then take the exit towards International Boulevard/Des Moines Memorial Drive. Turn left onto International Boulevard and follow signs to the Rental Car Center, located at 18200 International Boulevard, SeaTac, WA 98188. For I-5 South arrivals, take exit 154B for SR 518 West and follow the same instructions as I-5 North. From SR 518 West, take the exit towards International Boulevard/Des Moines Memorial Drive, turn left onto International Boulevard, and follow signs to the Rental Car Center. If you're on I-405 South, take exit 4 for WA-518 W/SeaTac toward Des Moines, then follow the same route as from SR 518 West. For SR 509, take the exit towards WA-99/International Boulevard, turn right onto International Boulevard, and continue for about 1. 5 miles to reach the Rental Car Center. The Rental Car Return lane is clearly marked and is open 24/7. The facility is approximately 2 miles from the airport terminals, with a free shuttle service available for customers. The shuttle runs every 10-15 minutes, with a travel time of around 5 minutes.