Phahonyothin is a major arterial road, and as many Bangkokians that live here work in downtown, there are plenty of ways to get in.
By taxi
Going by metered taxi is the most comfortable and expensive way to get in and around the district. It can be used for both short and long distances. Always insist on the meter. If the driver refuses, get out and get another taxi, as there is always another one waiting for you. A ride from Sukhumvit or Silom to Chatuchak Weekend Market shouldn't cost you more than 100 baht. If you're heading up north to Don Muang Airport, expect a price in the 200-300 baht range, depending on traffic.
By bus
Phahonyothin stretches as far north as 30 kilometres, and the BTS and MRT systems don't even reach close to it. So you'll have to travel as the locals do â by bus. Going by taxi is also possible, but that costs a lot more. Keep in mind that bus travel in Phahonyothin is very troublesome, though. Getting from north to south can take you two hours or more, depending on traffic. The most important line is ordinary and air-conditioned bus 59, which runs 24 hours a day. It starts at Sanam Luang in Rattanakosin and passes by Ratchdamnoen Klang Road for Khao San Road and Panfa Leelard pier, the western terminus of the Saen Saep Express Boat. It then continues through Lan Luang Road, Phetchaburi Road, and heads north along Phaya Thai Road, passing Victory Monument. From there, it goes all the way north along Phahonyothin Road passing the Chatuchak Weekend Market, Don Muang Airport and finally the Thammasat University campus in Rangsit.
By train
Bang Sue Train Station is a worthy alternative for the busy and crowded Hualamphong Train Station, but can only be used if you're heading to the north or northeast of the country. You can reach it using the MRT metro system, of which Bang Sue is the last stop. You can also take the Skytrain to Mo Chit and continue by metered taxi.