Does Denmark Require Return ticket for entry?

I've flown to Paris this way, it was a while ago but still post-911. I don't think this should be a problem. One might receive a bit extra scrutiny by security or customs agents, but I don't think "refused entry" is accurate.

I have traveled to Europe many times over the last 30 years and never once have I been asked to produce a return ticket. As long as she has the right answers at immigration and they don't suspect she is going to overstay, she should be fine.

We flew to Copenhagen in 2014 and returned to the USA via a transatlantic cruise and had no problems.

I would suggest the she scopes out a possible return ticket from the likely places that she will want to return. She may be in for a surprise for a one way ticket. The taxes that the UK charges on flying are high. Of course, Icelandic may be an option.

I have never been asked for a return ticket anywhere in the world...including two different trips to Copenhagen in the last 5 years, the most recent one being this past September. She will need to be able to articulate her reason for being there, how long she is staying, the places she will be visiting, etc. As long as she doesn't seem suspicious to the immigration officer there shouldn't be a problem!

They ask how long you will be there and what you plan on doing. I have never had them ask to see my return ticket.

But then I have always had a return ticket and I don't know how much info the airlines shares with the country you fly into.

Border security will have the manifest from the plane and likely your ticket information. Yes, she may be asked about her plans, she should have a ready answer Plan is to stay in Denmark for x days, then go to....., planning to fly home on or about X date) If she chooses not to offer much information or is vague, then she might raise some flags and asked more questions. They are concerned that someone may be trying to stay and work illegally. Many on here have had no problems, but for me, a 50-some year old with a number of prior entries, I am viewed a bit differently than a 20 year old showing up for the first time. Information is key, have a plan laid out on paper and be able to explain it.

My daughter, age 20, is flying from the US on a US passport to Copenhagen tomorrow evening.

I was also about to answer this and realized the daughter is already happily in Denmark by now. Just pointing out for the others that might be tempted to answer.

You are correct, my daughter has been happily enjoying Denmark since the day after I posted this. It's great we got these replies, though; perhaps they'll be useful to someone else. I had seen something online the night before she left that said she'd have to have a round trip ticket to gain entry. I spent that whole evening trying to figure it out. Oh well, she got in no problem and is having a blast, meeting fellow travelers from everywhere, and going with the flow. Thanks all.