Frankfurt am Main airport offers the cheapest routes to Bangkok, from ฿10,041; whereas Munich Franz Josef Strauss airport is typically cheaper if you're flying to Bangkok, from ฿18,167. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.
Here are some of the cheapest flight destinations from Germany:
Fly from Frankfurt am Main to Minsk from ฿10,041
Fly from Munich to Bangkok from ฿18,167
Fly from Munich to Phuket City from ฿19,679
Fly from Frankfurt am Main to Chiang Mai from ฿23,104
Fly from Munich to Krabi from ฿26,025