Can " When it comes to ....." be expressed in another way?

[clearforest]

Hi, there.

I got one question on introductory paragraph of one essay.
when I was going to navigate the paragraph to main topic, some evaluator told me to use " when it comes to ...." .
I think he gave me a function-able expression. But I do like it, because some dictionaries view it as a informal expression, which is not welcome in academic writing.
So could you please explain me how to express the same meaning but with a formal way?
thanks a lot. Looking forward to seeing response soon.

BR/Richard

[Tdol]

Could you give the full context?

[clearforest]

Could you give the full context?

original script:
When traveling,people prefer to inexpensive air flight progressively now. For this kind of flight, some people deem its adverse impact will exceed the benefit..........

Modified:

When it comes to traveling, people now prefer more inexpensive air flights. .................

[bhaisahab]

original script:
When traveling,people prefer to inexpensive air flight progressively now. For this kind of flight, some people deem its adverse impact will exceed the benefit..........

Modified:

When it comes to traveling, people now prefer more inexpensive air flights. .................

Your sentence is fine. The original script is barely comprehensible.