The flight is dropped. 100%

TG would not have stopped taking reservations for JFK-BKK if they were not totally committed to the cancellation.

It is simply a matter of staunching their losses.

Even at 100% capacity, the nonstop flights are losing money due to fuel costs.

They will simply funnel JFK passengers to the LAX nonstop until they change routing next year.

Once they make the official announcement, all LAX-BKK reward seats will evaporate quickly.

Be proactive and re-book through LAX, or route on another *A carrier now.