Originally Posted by
yvrcnx
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.
Most countries ask me how long I'm staying. None have ever asked for proof.
The only airline that's ever given me an issue was UA when I was flying to Europe on a one-way, but even there, the agent just asked "how long are you staying?" and overrode the system. No proof required.