Pattaya is located 130km southeast from Bangkok. There are several possibilities to travel between Pattaya and Bangkok.

Thai International Limousine Service
Booking directly (038 423140-1) or through travel agents and tour operators. The price is around 1,800 Baht.
Public Taxi
You can hire a public taxi to come from the airport to Pattaya. The taxi stand is located outside of the arrival hall. The price is around 1,400 Baht without highway toll (around 150 Baht).
Back to Bangkok you can hire a taxi from most travel agents or tour operators. The price ranges from 800 Baht to 1,500 Baht without toll.
Public Bus
Air-conditioned buses run between Bangkok and Pattaya North Road (close to Sukhumvit). The trip takes about 3 hours. The tickets can be bought at the bus station.
Bangkok Ekamai - Pattaya
Every 30 minutes from 5:40 to 21:00. The price is 90 Baht.
This bus is the best option for central Bangkok and the train station.
Bangkok Morchit - Pattaya
Every 30 minutes from 5:40 to 19:00. The price is 90 Baht.
This bus is the best option for the airport and northern Bangkok.
Pattaya to the airport
A bus directly to the airport departs at 9:00, 13:00 and 17:00. The price is 200 Baht.