OS travel - One parent and kids with a different surname

[Natalie_B]

Early next year I will be traveling to the US with my two small children and my mother. The kids have a different surname to me and it reminded me of an article I read a few weeks ago:

http://www.traveller.com.au/travelling-with-children-passports-may-not-be-enough-gk51vi

Has anyone had experience with this recently? We've travelled domestically many times without Mr Natalie and didn't have any issues.

 

[Captain Halliday]

We did the US in July. We left Aus separately and anticipated and issue so took the birth certificate (copy)... But had no issues and didn't need the certificate but having it gave us peace of mind. We did the same about 18 moths ago without issues.

 

[Boris spatsky]

I was advised to take a letter signed by both parents and the birth certificate when i travelled with our 4 yr old alone under similar circumstances. Hong Kong customs asked a few questions, read the letter and let us through.