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Bangkok Airways was created in 1968.
Thai Airways are currently using the Boeing 777-200 for the Bangkok-Johannesburg service (Flight TG991).
Thai airways International flies from Bangkok to Auckland in a 777-200ER with 292 seats for its 12 hour journey
321 km - about 6 hours 3 mins Note: you must take a ferry part of the way.
Thai Airways use the Airbus A380-800 for flights between London (LHR) and Bangkok (BKK).
The Boeing 787-8 Dreamliner is used for flights between Bangkok (BKK) and Perth (PER).