Seattle-Tacoma International Airport features dedicated VIP airport lounges both post-security and landside:
Public Area (Pre-Security)
USO Center
Location: Mezzanine level above Checkpoint 4 (Main Terminal).
Hours: Monday, Wednesday, and Saturday from 8:00 am to 4:00 am; Sunday from 8:00 am to 8:00 pm; Tuesday, Thursday, and Friday from 8:00 am to midnight.
Amenities: Sleeping bunks, showers, luggage storage, complimentary food, beverages, and family space.
Access: Complimentary access for active-duty military personnel, reservists, and their families.
Departures Area (Airside)
The Club at SEA
Location: Concourse A (near gate A12) and Concourse S (mezzanine level above gate S10).
Hours: Concourse A: 5:00 am to 12:30 am; Concourse S: 6:00 am to 1:30 am.
Amenities: Quiet seating, snacks, bar service, Wi-Fi, and shower facilities (Concourse S).
Access: Priority Pass, LoungeKey, partner airline premium passengers, or day passes purchased at the door (subject to capacity).
Alaska Lounge
Location: Concourse C (mezzanine near gate C16A), Concourse D (near gate D1), and Concourse N (flagship lounge above gate N15).
Hours: Typically 5:00 am to 11:00 pm.
Access: Alaska Lounge members, eligible Alaska Airlines First Class passengers, American Airlines Admirals Club members, and oneworld elite travelers.
The Centurion Lounge (American Express)
Location: Central Terminal, mezzanine level overlooking the dining pavilion.
Hours: 5:00 am to 10:00 pm.
Amenities: Gourmet Pacific Northwest cuisine, craft cocktails, shower suites, and airfield views.
Access: Exclusive to American Express Centurion, Platinum Card, and eligible Delta SkyMiles Reserve cardholders.
Delta Sky Club
Location: Concourse A, near gates A1 and A11.
Hours: 4:15 am to 12:15 am.
Amenities: Full buffet, craft bar, workstations, and shower suites.
Access: Delta One passengers, Delta Sky Club members, and qualifying American Express Platinum cardholders traveling on Delta.
United Club
Location: Concourse A, mezzanine level across from gate A9.
Hours: 4:30 am to 12:15 am.
Access: United Club members, Star Alliance business/first passengers, and day-pass holders.
British Airways Terraces Lounge
Location: Concourse S, near gate S10.
Access: British Airways First and Club World passengers and eligible oneworld elite flyers.