There are plenty of options to travel to Pattaya from Bangkok. If you are just planning to visit Pattaya catches a taxi costing around 1000 Baht. The prices are fixed for taxis from the airport. A better option is that you can rent a car from Avis or Eurocar at Bangkok Intl. Airport and drive to Pattaya in an hour. Average car rental is around 1200 Bhat per day. Make sure you get your third party insurance and extra cover to save from any unexpected event on the road.