Bangkok Airport to Pattaya by Taxi - Cost?

As indicated prior, the bus is not a bad experience. However, if you want to take a taxi, do not contract for one until you get outside of the "hall". When you exit the hall, you will see lots of people waiting for groups, waiting to get your business, etc. Arriving on an international flight, you'll be at the far end of the terminal. Make a 180 degree turn and head toward the other end of the terminal. Everyone will be bothering you for a taxi but keep walking. Once you get about 3 doors/2 escilators from where you exited the hall (though you are still inside the terminal) start asking people about a taxi. If you go outside, the price is even cheaper. Just make sure someone that followed you the whole time isn't the one talking to you. You should be able to get a taxi (metered though they won't usually turn on the meter) for 1200 - 1400 baht, including the tolls. The taxi will be pre-paid, you pay an agent at the airport. Tell the person that you want to check out the taxi though most of them are in good order.