I go to NewYork (at) every chance I get.

[October wind]

I go to NewYork (at) every chance I get.
Is “at” necessary?

 

[PeterCW]

In written English I would use "at". In an informal conversation I would probably omit it.

Having said that I would be more likely to say or write "at every opportunity".

 

[October wind]

Thank you very much.

 

[Tarheel]

"I go to New York every chance I get" is perfectly good in American English.