Suvarnabhumi Airport, a new international airport located 24 kilometres east of Bangkok, was due to be open on September 28, 2006. It replaces the old overloaded airport at Don Muang and accommodates all international and domestic flights to Bangkok.

The Transportation System Service

1.Buses and coaches for passengers traveling with tour agencies are able to drop off the passengers at 4th floor of the passenger terminal complex for departure passengers. Buses and coaches will have to park at the public transportation center. As for the arrival passengers, there are pick-up points at 1st floor of the terminal.

2.Airport shuttle busses will be in service for the personnel and passengers traveling between the public transportation center, the long term parking area and the passenger terminal complex. At the initial phase, there will be 3 routes.
Route 1 is for people who want to minimize the traveling time. The distance will be 8.7 kilometers. The starting point is at the public transportation center and there is only one pick-up point at the long term parking area. One round trip takes approximately 10 minutes.
Route 2 is for passengers who park their cars at the long term parking area. There are approximately 11 pick-up points along the journey. The trip from the parking area to the terminal takes approximately 11 minutes, and the return trip 16 minutes.
Route 3 is for passengers traveling between the terminal and the public transportation center. There are approximately 10 pick-up places along the journey.
The trip from the public transportation center takes approximately 11 minutes, and the return trip 16 minutes.

3.Private cars can be parked at the parking building after dropping off passengers at the 4th floor of the terminal complex. Pick-up points are on the 2nd floor.

4.Taxis can drop off passengers at the 4th floor of terminal complex, and will have to leave the area immediately. Pool taxis can wait for passengers at the public transportation center.

5. Limousines can be ordered at the service counters outside the terminal on the 2nd and 4th floors but will be parked at the public transportation center.

6.Airport express service will be operating between the airport, hotels and various important places in Bangkok and the suburbs. ... our Airport transfer Service...

7.Public bus services (air conditioned) will be operating in 6 routes
1) No.549 Suvarnabhumi - Min Buri - Bangkapi
2) No.550 Suvarnabhumi - Happy Land
3) No.551 Suvarnabhumi - Victory Monument
4) No.552 Suvarnabhumi - Onnuj BTS Station
5) No.553 Suvarnabhumi - Samutprakarn
6) No.554 Suvarnabhumi - Rangsit (Special Route for Suvarnabhumi - Don Meung Bangkok International Airport)
All the bus services operating along all these 6 routes will drop off airport passengers at the public transportation center.

8 .Trains by the State Railway of Thailand will be in service between Suvarnabhumi Airport and major places in Bangkok and the Suburbs. There will be an electric train service between Suvarnabhumi Airport rail link and the city air terminals along the East rail track totaling 28 kilometers. There are 8 city air terminals : Phyathai, Ratchaprarop, Makkasan/Asoke, Ramkamhaeng, Huamak, Bantubchang, Ladkrabung and Suvarnabhumi.

Source: The Airports of Thailand Public Company Limited (AOT)