Originally Posted by
FlY2XS
Is that actually a requirement anymore? Travelling with my son going to a study abroad trip last August, he was on a one way booking and AC didn't even bother to ask for anything. Immigration in CPH wanted his visa documentation (and even then only because we said he was staying for 5 months), but nothing on the Canadian side.
Most countries do want to see proof that you are leaving if you are not a resident or citizen but I believe that it is not regularly enforced, though we have been asked last year when entering via Amsterdam.
I think it just depends on who you get and I find that Asia enforces this quite a bit more than Europe does.