The question is whether foreign travel brings more advantages or disadvantages.

[yi-ing]

The question is whether foreign travel brings more advantages or disadvantages.

Shouldn't it be 'travels' instead of 'travel'?

I thought we could always use "whether or not". Now I can see that "whether" can be used with other words.

whether advantages or disadvantages.

 

[emsr2d2]

No. Here, "travel" is an uncountable noun. "or not" doesn't have to be go with "whether".

 

[yi-ing]

No. Here, "travel" is an uncountable noun. "or not" doesn't have to be go with "whether".

Is it possible to say?
The question is whether foreign travel brings more advantages or not.

 

[andrewg927]

Yes.

 

[emsr2d2]

Is it possible to say (no question mark here) "The question is whether foreign travel brings more advantages or not"?

See above.