Before transferring Ultimate Rewards or Membership Rewards to British Airways, either confirm the space is there with a British Airways phone agent (call the Hong Kong or British number, not the US number) or confirm you see the same space on
the Qantas award search engine.
Not exact matches
Both
Qantas and British Airways
award search engines display LATAM
awards.
I recommend using British Airways and / or
Qantas «
search engine to find Cathay Pacific
award availability.
Between British Airways»
search engine and
Qantas», you'll get a decently thorough picture of
award availability within OneWorld.
Or to get other ideas for route options, or to just
search for OneWorld
award seats, try using expertflyer or
Qantas»
search engine.