Updated December, 2012 [caption id="attachment_6850" align="alignleft" width="300"]Nice new flatbed seats on United Airlines Nice new flatbed seats on United Airlines[/caption] This is the question I am asked most often: How much does a trip to Paris cost? Here are my answers plain and simple: Plane Tickets Mid January to March tends to be the cheapest time to fly to Paris.  Summer and Fall are the most expensive! First Class/Business Class: Roundtrip tickets can run anywhere from $4,500 to $9,000 depending upon how far in advance you purchase them. Economy: Flights from the U.S. can range between $500-$1200 depending upon your city of departure.