score:3
If the duty-free liquid is in a sealed plastic bag, with the receipt clearly visible, and you do not open the bag, you should be fine:
http://www.airfrance.us/US/en/common/guidevoyageur/pratique/bagage_transport_liquide_airfrance.htm
On board your connecting flight departing from the European Union, you may transport duty-free liquids purchased at your departure airport or on board, as long as they remain in a sealed plastic bag. You must keep the receipt and make sure it is clearly displayed in the sealed bag. The receipt must list the airport or airline company through which your purchase was made.
Similar rules are in place in the United States:
http://www.tsa.gov/travel/security-screening/liquids-rule
You may carry liquids more than 3.4 oz or 100 ml in your carry-on bag if:
- You are traveling internationally to the United States with a connecting flight.
- They are in transparent containers.
- You bought them at a duty-free shop where it is packed in a secure, tamper-evident bag.
Upvote:1
The CDG web page has a nice website for flight connections that also states whether you have to go though a security check. If that is the case, liquids will be problematic.
Upvote:4
Update on April 2018. My flight was from San Jose - Costa Rica (SJO) with the first change in Panama (PTY), the second in Paris (CDG), heading to Poland (WAW). I've just passed the security check in Paris with the 0,5 bottle of rum packed in sealed (transparent) bag at the duty-free shop at SJO Airport. The receipt was entered in the bag (but not sealed together). It has alerted the French officer but eventually, this wasn't the problem. The security crew repacked the bottle in their own (official) bag and sealed it together with the original receipt inside. Based on my experience there is no reason to worry. Duty-free item can transfer through CDG without any problems when basic security principles are maintained.