How long before an international flight out of GSO?

[RJKarl]

Remember if you are flying out of Toronto to the US, customs will be done at the Toronto airport.

Also look for the lines specifically for Americans. They are much shorter.

 

[siff]

Try to check in for an international flight less than 45 minutes before departure at GSO, or any other airport for that matter, and see what happens.

Yeah, not for an international flight. 45 mins and your screwed...