The most popular route from Thailand to Cuba is Bangkok Suvarnabhumi - Havana Jose Marti Intl. You may also consider Phuket City - Varadero Juan Gualberto Gomez or Krabi - Havana Jose Marti Intl.
Due to the rapidly changing circumstances due to COVID-19, airlines like Aeroflot and KLM flying from Thailand to Cuba have implemented new flexible cancellation policies.
Looking at all options, your cheapest flight can be booked for ฿ 35,886. While the most popular route (Bangkok Suvarnabhumi - Havana Jose Marti Intl) can be booked for ฿ 40,080 on average our data indicates ฿ 45,668 when flying from Thailand to Cuba