Delta and Korean Air have code-shared round-trip flights from Dallas (DFW) to Chiang Mai or Singapore (CNX, SIN) for $691-$724 with a connection. Chiang Mai flights February to March. Singapore flights March and April. No weekend departures. 7-day minimum stay required.

Singapore availability is very calendar limited.
Some small OTAs on Skyscanner have this for as low as $691; which is cheaper than the airline.

Read More Cheap Flights: Dallas to Chiang Mai or Singapore $691-$724 round-trip [Feb-Mar / Mar-Apr] – Delta / Korean Air

Korean Air has round-trip flights from Dallas (DFW) to Chiang Mai (CNX) for $727-$788 with a connection. Flights in November and March. Departures on Tuesday, Wednesday, and Thursday. 7-day minimum stay required. No Thanksgiving dates.

Some small OTAs on Skyscanner have this for as low as $727; which is 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.

Read More Cheap Flights: Dallas to Chiang Mai $727-$788 r/t [November, March] (No Thanksgiving) – Korean Air

Korean Air has round-trip flights from Dallas (DFW) to Bangkok, Chiang Mai, or Cebu City (BKK, CNX, CEB) for $783-$884 with a connection. Flights August to November. 7-day minimum stay required. No Thanksgiving dates.

Some small OTAs on Skyscanner have this for as low as $760; which is 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.

Read More Cheap Flights: Dallas to Bangkok, Chiang Mai, or Cebu City $760-$884 r/t [August-November] (No Thanksgiving) – Korean Air