Hi, I hoping someone might have some advice on this.

I hold a Thai/US citizenship. I got married in the US to an American husband many years ago, and obtained US Citizenship, and live in the US. I still use my maiden name for both Thai and US passports.

Does anyone know if there will be issues if I hyphenate my last name on the US Passport only? I will be traveling back to Thailand in the near future. So if I do modify my last name, I will have:

1. Thai Passport - Maiden Name
   
2. US Passport - Maiden Name-husband's last name
   

What do I put as my last name on the airline ticket from the US?

"What do I put as my last name on the airline ticket from the US?

Copy exactly what it says on your US Passport.

One post removed.

If you intend using both passports on a single trip, i.e. departing the US with the US passport and entering Thailand with the Thai passport then I think the chance you will encounter a problem with different surnames is quite high. Airlines are much more strict about names matching passports nowadays.

I've noticed that It has become more common for Thai women in mixed marriages to adopt their (Thai) maiden name as a middle name when taking their husbands surname. Perhaps that is a solution for you. Airline tickets don't usually require that a middle name is specified.

US security laws require that you provide your full name as in your US passport for booking when international flights, so that is what you need to buy tickets. Since you are a Thai citizen, use your Thai passport to enter Thailand and they will not question you about tickets and there is no need to show or discuss your US passport. Upon return to US, use your US passport and they will not question you about airline tickets and no need to discuss or show Thai passport. My wife has done this for 42 years without a problem.

Thank you, all. I will think about it for while before I make any name changes for now. But I'll remember to make sure I use whatever name I have on my US passport for the airline tickets since I will be departing from the US and I think the security is more strict.

Does anyone know if there will be issues if I hyphenate my last name on the US Passport only?

Probably issues with the Passport Agency, unless you've legally changed your last name from your maiden name (which is on your marriage certificate, and subsequent US documentation) to a new, hyphenated name. You can't just renew your passport with a new name, unless accompanied by documentation.

Does anyone know if there will be issues if I hyphenate my last name on the US Passport only?

Probably issues with the Passport Agency, unless you've legally changed your last name from your maiden name (which is on your marriage certificate, and subsequent US documentation) to a new, hyphenated name. You can't just renew your passport with a new name, unless accompanied by documentation.

Right! Use Form DS5504 to make name changes