Bangkok operates two international airports. Suvarnabhumi (BKK) lies 25 km east of the city centre; most intercontinental flights arrive here. Don Mueang (DMK) handles low-cost carriers and regional routes, sitting 20 km north. Rental counters cluster in the arrival halls at both, giving you wheels the moment you land.
City desks scatter across Sukhumvit, Silom and Siam. If your hotel sits near a BTS or MRT stop, you can collect downtown and dodge airport traffic. Left-hand traffic prevails; speed limits run 50-60 km/h in urban zones, 90 on national highways, 120 on toll motorways. Route 7 - the Bangkok-Pattaya motorway - charges tolls but cuts the journey to roughly ninety minutes.
An International Driving Permit pairs with your home licence at most suppliers. Check your voucher for the exact document list. Fuel stations - PTT, Shell, Bangchak - appear every few kilometres along main roads and expressways.