As a major international air hub, Bangkok's Suvarnabhumi International Airport hosts business and first class lounges for almost all major airlines. The biggest lounges belong, naturally, to Thai Airways and are shared by other members of the Star Alliance such as United and Singapore Airlines.
Thai Airways Business Lounges
Thai operates two large lounges at Bangkok's airport. Although they differ somewhat in size and furnishings, the features and facilities are generally the same. The largest lounge is on Level Three of Concourse D. The second, smaller lounge is also on Level Three of Concourse E near the security checkpoint. The lounges offer light snacks, drinks, coffee and tea in an open buffet. Most lounges have free wi-fi internet access as well as at least some computers to use for those that didn't bring their laptops. However, there are few, if any, power points for you to connect your notebook to for a last minute power-up. Some of the lounges have smoking rooms as well as showers.
Louis Tavern Lounges
Many other airlines, as well as Priority Pass members, use the lounges operated by Louis Tavern. There is one of these in the international departures area. The lounge is located on Level Three.
Louis Tavern lounges feature transit hotel facilities, showers, massage and other services, usually available at additional charges. Other features are similar to other business lounges.
Bangkok Airways Passenger Lounge
One of the lesser-known perks for passengers of "boutique" airline Bangkok Airways is their lounge, which is open to all passengers, regardless of the class they're flying. The lounge for international passengers at Suvarnabhumi International Airport is located on level three on Concourse A. The comfortable lounge offers tea, coffee and juices to drink as well as light snacks. There are also a few internet terminals for free use.