Cathay Pacific has round-trip flights from Dallas (DFW) to Singapore, Seoul, Kuala Lumpur, Ho Chi Minh City, or Hanoi (SIN, ICN, KUL, SGN, HAN) for $642-$768 with a connection. Flights August to November. No Thanksgiving dates.
Some small OTAs on Skyscanner have this for cheaper than the airline. If you plan on booking there, beware of any site that charges a fee to cancel a ticket within the 24-hour “free” period. Use unknown booking sites at your own risk.