In the Bangkok Post, Sept. 11 I think, there was an article which included:

"Ms Raweewan said passengers should look for an airport code on their tickets. If it says NBK, it denotes a flight departure from Suvarnabhumi or BKK for Don Muang. All tickets with flights leaving from Sept 28 onward will be coded NBK, she added."

The official web site http://www.bangkokairportonline.com/node/15 says:

Airport Code
Suvarnabhumi Airport will inherit its IATA airport code BKK from Bangkok Don Muang International Airport.

FWIW, today I got an e-mail from the US Embassy saying, in part:

1. This Public Announcement is being issued to alert U.S. citizens of the potential impact the opening of Bangkok's new Suvarnabhumi International Airport may have on travelers arriving in and departing Thailand. The Suvarnabhumi International Airport will replace Bangkok’s current airport, Don Muang, and is scheduled to begin operations in mid-September. Delays stemming from the phase-in of initial operations at Suvarnabhumi International Airport (BKK) are inevitable and travelers should plan accordingly. Additionally, international travelers arriving during the phase-in period may be required to travel from Suvarnabhumi airport to Don Muang airport to catch their domestic flight. Limited domestic service on Thai Airways will shift from Don Muang Airport to Suvarnabhumi International Airport on September 15. Current plans call for full international service at Suvarnabhumi beginning September 29. These dates are subject to change. Suvarnabhumi will inherit Don Muang's "BKK" international airport code and Don Muang will be recoded as "DBK". Therefore, travelers are strongly encouraged to reconfirm destinations with airlines if your travel falls on or near these dates. Information on the new airport can be found at: http://www.bangkokairportonline.com/.

and

2. Suvarnabhumi International Airport is located 18 miles (30 kilometers) east of downtown Bangkok and is approximately a thirty minute drive to/from downtown Bangkok in light traffic; this time is roughly equivalent to that for the existing airport. However, the drive time could be longer due to Bangkok's ubiquitous unpredictable traffic. The new airport will have no taxi facilities in the main terminal. Arriving passengers who need a taxi will have to board an airport shuttle bus from the main terminal to a nearby taxi and bus terminal.

I guess we'll just have to wait and see if there are taxis without the shuttle bus-ride, or not!

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