Airport Rail Link provides train service at the maximum speed of 160 kilometer per hour on an elevated track parallel to the eastern railway, which covers the distance of approximately 28 kilometers, passing through 8 stations; Phyathai Station, Rajprarop Station, Makkasan Station and City Air Terminal, Ramkhamhaeng Station, Hua Mark Station, Thab Chang Station, Lad Krabang Station, and Suvarnabhumi Station.
Passengers who wish to travel to Suvarnabhumi Airport have three options of service:
1. SA Express, a train service that transports passenger from City Air Terminal or Makkasan Station to Suvarnabhumi Airport within 15 minutes without stopping at any station along the way.

2. SA Express, a new express route that transports passenger from Phyathai Station to Suvarnabhumi Airport within 20 minutes without stopping at any station along the way.

3. City Line, a train service that transports passengers between Phyathai Station and Suvarnabhumi Airport within 30 minutes and stops at every station long the way.
It can be connected to MRT (subway) at Makkasan Station and BTS (skytrain) at Phyathai Station.

Operate daily from 06.00 - 24.00 hrs

For more information, please enter http://airportraillink.railway.co.th

Public buses run several routes from the Public Transport Center to Bangkok. These Intercity Busses run from 6am to 9pm. Fares depend on destination and tickets are available at the Intercity Bus Counter. BMTA Public Bus service runs   24-hours and costs
  35 baht to various destinations.
  Service is available at Public Transport Center. Fares THB 24-35.
  For more information please contact phone number 184.

  No. 549
  Suvarnabhumi Airport - Minburi: (24 hours)
  Lardkrabang Police Station – Romklaw Rd. – Kasenbundit   Uni.-   Sereethai Rd.-Bangkapi

  No. 550
  Suvarnabhumi – Happy Land: (24 hours)
  On-nutch Rd. – Khet Prawes – On-nutch Intersection – Bangapi
  Intersection – Happy Land

  No. 551
  Suvarnabhumi Airport – Victory Monument: (24 hours)
  Motorway – Ksembundit Uni. – Klongton Pol.Station
  - Department of Public Works and Tow & Country Planning –         MCOT
  - Dindaeng – Victory Monument

  No. 552
  Suvarnabhumi Airport – Klongtoey: (05.00 – 23.00 hours)
  Bangna Trad Rd. –Chularat Hospt. – Ramkamhaeng 2 –
  Central Bnagna – Udomsuk – BTS Station (On-nutch) –
  Ekkamai – Asoke – QSNCC – Lotus – Klongtoey

  No. 552A
  Suvarnabhumi Airport – Samuthprakarn: (24 hours)
  Bangna Trad Rd. –Chularat 1Hospt. – Ramkamhaeng 2
  - Central Bnagna – Samrong – Samuthprakarn – Praeksa   Garage

  No. 553
  Suvarnabhumi Airport – Samuthprakarn: (05.00 – 22.45 hours)
  Kingkaew Rd. – Wat Salud (Bangna-Trad) –
  Ramkhamhaeng 2 – Srinakarin Rd. – Theparak intersection –
  Crocodile Farm – Samutprakarn (Pak Nam)

  No. 554
  Suvarnabhumi Airport – Rangsit: (24 hours)
  Ram Inthra Rd. – Laksi – Vibhavadee Rangsit Rd. –
  Donmuang – Rnasit

  No. 555
  Suvarnabhumi Airport – Rangsit: (Rama 9 Expressway)   (06.00
  – 02.00 hours) Dindaeng – Suthisarn – Vibhavadee Rangsit
  – Kaset Uni – Laksi – Donmuang –Rangsit
 
  No. 558
  Suvarnabhumi Airport – Central Rama 2 : (Expressway)
  (5.00 – 23.00 hours) Bangna Trad Rd. – Daokanong – Wat Son
  – Suksawas Rd. Ram 2 Rd. – Cetral Rama 2 - Samaedam

  No. 559  
  Suvarnabhumi Airport – Rangsit : (Expressway)
  (05.00 – 23.00 hours) Sereethai Rd. – Siam Park
  – Noparat Hospital – Fashoin   Island    – Expressway (Ring Road)
  – Lamlukka – Dream World   – Klong 4, 3, 2, 1 – Suchat Market

24 hour taxis servicing the airport include those with negotiable rates and those using meters. The airport has taxi stands on Level 1 that charge passengers an additional fifty baht for the privilege of waiting in line for a taxi that is more   likely to use its
  meter and receiving a ticket through which complaints can be
  lodged if the taxi driver behaves   inappropriately.

Car rental companies are represented by local and international operators. Several car rental agencies operate counters just outside Gate B in the arrivals hall. These car rental service counters at will make bookings, and the shuttle   bus will
   transport customers to the Public Transportation Center to
   pick up their cars. The car rental counter at the Public
   Transportation Center provides service 24 hours a day.

Shuttle bus within Airport 24-hour Service

Two lines of service within Suvarnabhumi Airport namely local line and express line

  Express Route Line
  * Public Transport Center
  * Passenger Terminal on the 4th Floor, gates 5
  * Passenger Terminal on the 2nd Floor, gates 5

  Local Line (Line A)
  Service can be utilized at the platform of Passenger Terminal
  on the 1st Floor, gates 3 and 8

  * Public Transport Center
  * Long-term car parking lot B,E
  * Long-term car parking lot A,C
  * BAFS Company
  * Opposite fire Station
  * TG Ground Service
  * TG Operation Center
  * TG Engineering
  * Control Post 3
  * Control Post 2
  * Passenger Terminal on the 1st Floor gate 1
  * Passenger Terminal on the 1st Floor gate 10
  * Passenger Terminal on the 2nd Floor gate 5
  * TG Catering
  * Airport Rescue & Fire Fighting Station

  Local Line (Line B)
  Service can be utilized at the platform of Arrival Hall on the   2nd    Floor, gate    5 (Exterior)

  * Public Transport Center
  * LSG Sky Chefs
  * Opposite fire Station
  * TG Operation Center
  * Novotel (front)
  * VIP Room
  * Free zone
  * Free zone exit
  * Intersection (Free zone)
  * TG Catering
  * Airport Rescue & Fire Fighting Station

  Local Line (Line C)
  Service can be utilized at the platform of Departure Hall on the
  4th Floor, Gate 5 and at the platform of Arrival Hall on the 2nd
  Floor, Gate 5

  * Public Transport Center
  * Rachathewa Police Station
  * Engineer Center (AMF)
  * Disposal Station
  * Meteorological Facilities
  * Opposite Engineer Center (AMF)
  * Airport Operation Building
  * Long-term car parking lot F,E
  * Long-term car parking lot B,E
  * Long-term car parking lot A,C
  * LSG Sky Chefs

  Local Line (Line D)
  * Public Transport Center
  * LSG Sky Chefs
  * Opposite Fire Station
  * TG Operation Center
  * Airport Office (AOB)
  * Novotel Hotel
  * Aeronautical Radio of Thailand Co., Ltd
  * TG Catering
  * Airport Rescue & Fire Fighting Station