Originally Posted by
MikeFromTokyo
Thank you. I will either book round trip and then refund if necessary, or buy an onward ticket. Will a printed out e-ticket for onward travel to any country satisfy them?
yes, this is certainly sufficient
I also once showed them the e-ticket on my smart phone or laptop as I had not printed out
likelihood that check in officer ask for onward ticket depends on destination. In my experience in USA they ask in over 50% of the cases, Europe far less than 50%, Asian less than 20% except if you take the ferry to Hongkong airport from China (much higher percentage)