Quick question: I'm applying for a DTV visa from Germany and then flying to Bangkok with a one-way ticket and on to Chiang Mai. Do I actually need a return ticket? The officials can see in the system that I have a long-term visa, right?
TLDR : Answer Summary
You do not need a return ticket when applying for a DTV visa from Germany to Thailand. While your visa application may require you to specify travel dates, there is no requirement for proof of onward travel. However, if you have concerns, purchasing a low-cost onward ticket could provide peace of mind.
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