Hi I am new to interlining and am not sure how the same works. I am planning a holiday with friends to Bangkok and we plan to spend a week at the beach maybe Krabi or Koh Samui, although jetairways website shows Bangkok airways and Thai airways as interlining and Eticket partners I can't seem to find the destinations while booking am I missing something or am I supposed to buy two different tickets in different airlines assuming they would tag the baggage to the end destination.

Any help is appreciated.