Austrian Airlines and Thai Airways International have entered into a new codeshare agreement

As a result, many additional destinations in Thailand and Southeast Asia can now be conveniently booked under an Austrian Airlines flight number.
With Thai Airways, you can reach the following destinations via Bangkok under the codeshare:
• Chiang Mai (CNX), Thailand • Denpasar (DPS), Indonesia • Hanoi (HAN), Vietnam • Hat Yai (HDY), Thailand • Ho Chi Minh City (SGN), Vietnam • Hong Kong (HKG) • Krabi (KBV), Thailand • Penang (PEN), Malaysia • Perth (PER), Australia • Phuket (HKT), Thailand • Yangon (RGN), Myanmar
Selected connections with Thai Airways are also available for booking under a Lufthansa flight number.

Source: Austrian Airlines