Can you be so kind to help.

Is there a bus from suvarnabhumi airport to nong khai.

If so do you know the times etc.

Thank you

Morchit (BKK north bus station) is where you need to go to to catch a bus to Nong Khai.

No idea about the times sorry

I remember a bus from Suvarnabhumi to Khon Kaen (2 a day or so).

But can not remember having seen Nong Khai.

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Mo Chit to Nong Khai with NCA (recommended).

http://www.nca.co.th/timetable-bkk-nongkhai.html

First table.

The three departure times on the right are from:

(example for day trip)

their own station (8:45)

Mo Chit (9:05)

Rangsit (9:40)

Can not help with details of locations.

A 9h trip, 500 km "as the crow flies".

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You can bet that there many other buses e.g. connection through Khon Kaen.

But travel times will easily inflate to 12h or so depending on the type of bus (many stops).

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A flight from Suvarnabhumi to Udon Thani with Thai Smile would be my recommendation (7:35h, 11:10h, 14:30h, 18:00h).

But up to you.

A search result (dated Feb/March 2015) saying there is one night bus (21h) from Suvarnabumi transport station to Nong Khai (via Udon). 8:30 hours to Udon, about another hour to Nong Khai.

http://www.goudonthani.com/vip-bus-suvarnabhumi-airport-udon-thani/?lang=de

the bus isn't fun.And buses aren't real safe in Thailand.You might want to check airlines.But like the one guy said,go to Mochit bus station.Have A lot of buses going there.