So my wife has an Australian passport in her married name and a Thai passport in her maiden name. She would like to leave Australia on her Aust passport and enter Thailand on her Thai passport, then leave Thailand on her thai passport and and re-enter Australia on her Aust passport. This way she would not need a visa to stay longer in Thailand. My question is there going to be any issue with check-in with the airlines and immigration if the tickets and boarding pass is in her married name?
TLDR : Answer Summary
The discussion revolves around the issue of traveling with two passports that have different names. The wife holds an Australian passport in her married name and a Thai passport in her maiden name. Many commenters shared their experiences traveling with dual citizenship and reassured that as long as she shows the correct passport at the appropriate times (departure and immigration), there should be no significant issues. It was suggested to carry a marriage certificate for clarity if necessary and that airlines may ask for both passports during check-in. Overall, many had successfully navigated similar scenarios without problems.