It depends on the immigration officer you get in Canada. Your wife is here as a visitor only until she has PR status, so the officer needs to be satisfied she will leave after 6 months. With a 1-way ticket, it could look like she has no intention of leaving.Red Tape Sucks said:Does my wife need a return ticket when entering Canada without her PR card application accepted?
We have heard that you do, and that you don't.
Does anyone have any experience with this situation?
So basically some people enter Canada and the officer never even asks to see return ticket. Other times an officer does ask. It's always recommended to have one just in case. You can also bring proof of PR application in progress.
Finally, she may have problems even boarding the plane in Korea. Often at Korean airport like Incheon they are very picky about Koreans flying to Canada as a visitor with only a 1-way ticket. You should be prepared to buy a return ticket on the spot if they demand it. Try calling the airline in advance and asking.
You could possibly see if she can buy a fully refundable return ticket, and then just cancel it after she gets to Canada.