Suvarnabhumi International Airport, the more modern of Bangkok's two major air gateways, is the airport which handles all international flights to and from Thailand's national capital. The older Don Muang Airport now handles mainly Orient Thai and Nok Air domestic flights. Thai Airways operates a half-hour flight between Bangkok's two airports, which are situated at opposite ends of the city. Taxi or shuttle rides between the two airports can last up to three hours.
Less than a decade after its 2006 opening, Suvarnabhumi International Airport greeted nearly 53 million passengers in 2015 and has grown into Southeast Asia's busiest airport. The single Suvarnabhumi International Airport terminal ranks among the world's biggest and handles both international and domestic flights. Passengers should expect the processing time at the airport's two immigration sections to last at least half an hour.
The Airport Rail Link, which travels up to 160kms per hour, is the fastest way to travel the 30kms between Suvarnabhumi International Airport and central Bangkok. However, rail passengers can also choose between an express line which travels non-stop between Suvarnabhumi International Airport and Makkasan Station or the slower City Line which stops at all rail stations. Taxis, car hire, and airport express buses are also readily available from the airport.
The Northern Bus Terminal, or Mo Chit 2, is the biggest, busiest, and most modern of Bangkok's three major bus terminals. The Eastern Bus Terminal, or Ekkamai, serves Eastern Thailand destinations, while the Sai Tai Mai Southern Bus Terminal handles destinations south and west of Thailand's capital city. Public minibuses travel to various destinations within a 200km radius of Bangkok.
Hualamphong Train Station, which also has its own MRT station, is Bangkok's main link to the State Railway of Thailand. Laem Chabang and Khlong Toei are Bangkok's two main ports. Bangkok's public transit system is growing every day, but the BTS Skytrain and MRT metro service are still the two fastest ways to travel across the city.
The two BTS Skytrain lines are the light green Sukhumvit Line and dark green Silom Line, while the Blue MRT line travels between the Bang Sue and Hualamphong rail stations. The BRT Sathon-Ratchaphruek Line and SRT Light Red Line are two smaller rail lines.
The most relaxing alternative to Bangkok's constantly clogged roads, however, may be the Chao Phraya Express Boat, which travels across the river past many of the city's most historic landmarks. The regular Chao Phraya Express Boat has an orange flag, while a more comfortable tourist boat with English commentary has a blue flag. The Saen Saep Express Boat travels 18kms through one of Bangkok's few remaining khlong canals.
Of course, Bangkok also boasts no shortage of three wheeled tuk-tuks, converted songthaew pick-up trucks, and motorbike taxis. More cautious tourists, however, may prefer local Bangkok Mass Transit Authority buses, even if their routes can be confusing. Buses are also the cheapest and most convenient way to travel around Khao San Road.