"Yup. If you take a train from Lisbon to the south of France you can get a quick and cheap abortion."
No, you most certainly cannot.
In France there are waiting periods, educational requirements, partner notification, abortion is limited to the first ten weeks only, and a general pro-natalist policy. If you want a quick and easy abortion, you are better off flying to the United States, Britain or the Low Countries. France is one of the most difficult lands in Europe in which to get an abortion.
You are invited to peruse the abortion laws of the Republic of France (in English here: http://cyber.law.harvard.edu/population/abortion/France.abo.htm).
Also, I believe the pro-natalist policies are focused on French citizens, not visitors.