Yes, up to a point. Where that point is depends, on your point of view. Personally I draw the line at about three months. That would mean a person should have missed at least 3 periods and had time to think about what they wanted to do. I also feel the the health of the mother or fetus or in cases of rape/incest abortion could be preformed at anytime.
The problem I have with most anti-abortion people is that when you really question them their objection it is almost always religious. Personally in my questioning it has always come down to religion, but there may be someone who is anti-abortion who doesn't feel that way because of religion, but so far I have found if you dig it comes down to religion.
You know what's funny, I was involved in a discussion about abortion when an anti-abortion person asked me,
"“Aren’t you glad your mother didn’t abort you?”
"Yes," I answered, "but if it would have made her life better then she should have. It's not like I would have known about it." They really didn't know what to say after that.
BTW I also feel the morning after pill should be free or at a very low cost and available without parental or anyone's consent.