Khon Kaen Flights

Getting around in Khon Kaen needs a while to be figured out!
There's sth. like a public bus called Song Tauw. They are like pick ups with 2 benches in the back. There are different lines through the city. YOu can decide between the different lines by the colour of the car. You wave at the Song Tauw and get on it. You pay when you get off. It definitely helps if you have a local to help you get around !!!

Of course you can also take a Tuk Tuk which will take you everywhere in town too.

Khon Kaen 's the city where easy to travel by bus,especially in city center. There 're 14 lines of bus and song taew or 2 rows car which cost you in a very low price from 5 THB. Please check this links for the bus route.
http://www.khonkaen.com/english/songtauw1.asp
http://www.khonkaen.com/english/songtauw2.asp
http://www.khonkaen.com/english/songtauw3.asp

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There're some bus companies for BKK - Khon Kaen route.The most elegant and best service 's Nakhonchai Air with special VIP coach.For the fare from BKK to Khon Kaen 's 384 THB.The service on the bus 're electric massage seat,1 meal,snacks,beverages,TV and clean toilet.For ticket,you can use online ticketing,tele-ticketing,ticket delivery and ticket outlets.Just check the website for more informations.Noted that this bus company located outside Northern and Norteastern Bus Terminal(about 2 kms),if you 'd like to take a bus at their company, you can ask the taxi for Tha Rot Nakhonchai(means Nakhonchai Bud Terminal) and you can take a bus at the Northern and Norteastern Bus Terminal too (N/E route@Counter 17,18, 3rd Floor and N route@Counter 22, 1st Floor).
Address:Kamphaengpetch 2 Road, Lad Yao, Chatuchak, Bangkok 10900

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One bus company which offer a special VIP coach with full services 's Charn Tour.For Khon Kaen to BKK,the fare 's 355 THB.They offer a big seat which you can choose to sit at single seat or couple seat.The company in Khon Kaen located in Air-con Bus Terminal(Klang Muang Road).

Sopheak,
Once you are on Khon Kaen, you should not have any trouble finding another bus to Viengchian. The bus terminal should have information and tickts. Of course you will still have to stop at customs and immigration, but there should be bus service directly, or I should say, at least to the border.

http://www.thailandday.com/Tickets/Bustickets/Busterminal.htm
KHON KAEN
From BANGKOK To KHON KAEN

DP. AR. TIME (hr.) Second Class
Air-condition DAYS
08.30 16:00 7 Bt 910 All Week
23.00 06:00 7 Bt 910 All Week

http://www.greenbusthailand.com/chaipattana/webfile/index.htm

Good luck!

There is even an 'international bus' that runs between Khon Khaen and Vientiane/Viengchan Laos. It's an air con bus and it's pretty cheap. Last year it ran several times a day but now it's just once per day. Otherwise, you can take buses between Khon Khaen and Nong Khai and transfer from the bus station to the Friendship Bridge/border via tuk tuk or via another 'international bus' that runs between Nong Khai and Vientiane. If you're in a rush, then it's faster but costs more to take a tuk tuk to the obrde rThe international bus starts/ends at Viengchan's Talat Sao/Morning Market Bus Station. You have to have a Lao visa and your passport to buy the bus ticket.
There's also the train which goes all the way to Nong Khai from Hualamphong Train Station in Bangkok and also picks up passengeres en route to Nong Khai (meaning that you can also catch the train in Khon Khaen, too).