Where do I catch the rental car shuttle at SeaTac Airport, how often does it run, and what are the typical wait times during peak hours?

Upon arriving at Seattle-Tacoma International Airport (SeaTac) and collecting your luggage, proceed to the 3rd floor of the airport parking garage. You will find clearly marked sliding glass doors near Baggage Carousel #1 at the north end and Baggage Carousel #15 at the south end. Step outside these doors to the designated shuttle pick-up islands. All rental car companies operate from the consolidated Rental Car Facility (RCF) located at 3150 S 160th St, which is approximately 2 miles from the main terminal. The blue and green shuttle buses run continuously 24 hours a day, 7 days a week. Under normal conditions, shuttles depart every 5 to 8 minutes. However, during peak travel hours—typically between 7:00 AM and 10:00 AM, and again from 3:00 PM to 7:00 PM—wait times can extend up to 15 to 20 minutes due to higher passenger volumes and heavy roadway traffic around the airport loop. It is highly recommended to allow at least 30 to 45 minutes of total transit time from baggage claim to the rental car counter to ensure you make your reservation without stress.