Hello,

I will need to go to WIS and UP in June.

I have always flown to US from YUL, which has US Customs.

However YQB is much closer from my home, and there are YQB to GRB flights with only one stop, like from YUL.

Would I clear customs in GRB or in ORD upon my connection?

Is it an hassle to fly to US non-major airports from a Canadian non-major airport?

Thanks

David