There are 2 left luggage counters at the Suvarnabhumi Airport:
Each item deposited will be charged at the rate of THB 100 per 24-hour period.
Items stored for over 24 hours will be charged at a rate of THB 50 per 12-hour period (any part of the 12 hour will be charged at THB 50).
If the items are deposited for more than 3 months (92 days), the charge per 24-hour period will be THB 200.00 per item. Any deposits not collected within 6 months (180 days) will - become the property of the depository.
NO jewelry, watches, antiques, gold, cash, credit cards, perishable goods, fragile articles, electric appliances, mobile phone, shaver, CD player, MP3 player, portable computer, camera (film or digital) or VDO camera accepted.
They will issue a slip to you, be aware, without that piece of paper you will not be able to reclaim your bags without an incredible amount of hassle, so do not lose it.
PS. It is very useful if you are having a layover in Bangkok.
Spend an evening enamoured by classical Thailand dance. Sit down to a meal of traditional Thai cuisine and watch as bejewelled dancers perform mystical routines to the percussive classicism of Thai music. Traditional costumes and delicious cuisine combine for a memorable evening.