Taxi from the airport to district 1 is about $12. The taxi company you want to use is green and white, the taxi drivers where a tie, I believe it is Vin Taxi, they are everywhere. If you use antoher taxi, you can bet the route is the long way, and the meter is fast. 17000 dong to the dollar, they also take U.S. money. Taxi back to the airport from the main area is around 120,000 dong, about $8 . In any respects, the travel is cheap. Give a few thousand dong as a tip, and you have made his day. Green and white taxi is the safe bet.