Thai Airways travel classes
THAI's Royal Orchid Plus frequent-flyer program allows passengers to earn miles on flights with THAI and its 27 Star Alliance partners. Miles can be redeemed for flights, upgrades, hotel stays and various other promotions. Membership is completely free.
Three classes are offered - Silver, Gold, and Platinum. Each has its own perks which include priority reservation and check-in, excess baggage, lounge access. At Suvarnabhumi Airport, passengers can access the Royal First Lounge, Royal Orchid Spa, Royal Silk Lounge, and Royal Orchid Lounge, depending on ticket class. Check out great deals form THAI right here.